Since December 20, 2006, the US Treasury has banned the export, melting, or treatment of 1¢ and 5¢ coins. Penalties: up to $10,000 fine and/or 5 years imprisonment per 31 CFR § 82.4. This page provides intrinsic metal value as a reference only -- not melting instructions.
Verify: eCFR 31 CFR Part 82 (full text) · Cornell LII -- 31 CFR § 82.1 (prohibition) · Cornell LII -- 31 CFR § 82.4 (penalties) · Federal Register interim rule, December 20, 2006
The copper penny melt value calculator for pre-1982 bronze Lincoln cents -- input by weight (pounds), coin count, or roll. Live copper spot price updates 3x per weekday. Federal melting prohibition (31 CFR § 82) applies; this tool is an intrinsic metal value reference only.
A pre-1982 bronze penny contains 2.9545 grams of pure copper -- giving it an intrinsic metal value of roughly $0.0415 at recent copper prices, about 415% of face value.
Each Lincoln cent struck from 1909 through 1981 (and bronze 1982 varieties) weighs 3.11 grams total and is 95% copper, yielding 2.9545 grams of actual copper content per coin. At $6.37 per pound of copper, one bronze penny carries an intrinsic value of $0.0415. On a per-pound basis -- the way bulk dealers actually trade sorted bronze cents -- 146 coins weigh approximately one pound, making that pound worth roughly the same as the copper spot price per pound. Federal law (31 CFR § 82) prohibits melting these coins; this figure represents their commodity metal content for reference purposes.
Because federal law prohibits melting pennies, numismatic value is the only legal path to monetizing a bronze cent above face value. The coins below can be worth hundreds to hundreds of thousands of dollars -- always check dates, mint marks, and varieties before treating any penny as ordinary.
| Variety | Circulated value (G-VF) | Why |
|---|---|---|
| 1909-S VDB Lincoln Cent | $500 - $1,500+ | First year of issue combined with designer Victor D. Brenner's initials on the reverse; the most iconic key date in the Lincoln series. |
| 1914-D Lincoln Cent | $100 - $500+ | Lowest Denver mintage of the early Lincoln series, making circulated examples persistently scarce. |
| 1922 No D (Weak Reverse) | $100 - $500+ | Die deterioration eliminated the D mint mark, creating an apparent Philadelphia issue from a Denver-only year. |
| 1931-S Lincoln Cent | $100 - $500+ | Second-lowest series mintage; Depression-era low production created a lasting key date. |
| 1943 Bronze Error | $100,000+ | A copper planchet left over from 1942 was accidentally struck with 1943 dies; non-magnetic and weighs 3.11g -- the definitive test. |
| 1944 Steel Error | $30,000+ | A steel planchet from 1943 production was struck with 1944 dies; magnetic and weighs approximately 2.70g. |
| 1955 Doubled Die Obverse (DDO) | $1,000 - $25,000+ | Famous doubled die showing dramatic doubling of the date and lettering visible to the naked eye. |
| 1969-S Doubled Die Obverse (DDO) | $5,000 - $50,000+ | Rare doubled die with strong doubling on obverse lettering and date; one of the most valuable post-WWII errors. |
| 1972 Doubled Die Obverse (DDO) | $200 - $2,000+ | Clear doubling visible on obverse; multiple DDO varieties exist for this date with varying premium levels. |
| 1982-D Small Date Bronze | $10,000+ | The transitional error -- only ~2-3 confirmed examples, weighing 3.11g instead of 2.50g; first example sold for $18,800 at Stack's Bowers in 2017. |
| 1992-D Close AM | $2,500+ | A proof reverse hub was inadvertently used on business-strike dies, with the A and M in AMERICA nearly touching. |
| 1995 Doubled Die Obverse (DDO) | $20 - $100+ | More recent and more common doubled die, but still commands a premium over face value in circulated condition. |
The 1982 Lincoln cent is the only year where the coin's composition cannot be determined from the date alone. Both the Philadelphia and Denver mints produced bronze (3.11g) and zinc (2.50g) cents that year, and visual inspection of the coin's surface cannot reliably distinguish them -- both look like copper pennies.
The weight test is the most reliable method. A digital scale calibrated to 0.01 grams separates bronze from zinc cleanly: bronze measures 3.11g and zinc measures 2.50g. The 0.61g difference is well outside any normal measurement error on an inexpensive jeweler's scale. This test works on worn circulated coins as well as uncirculated examples.
A balance-scale 'see-saw' approach works without a digital scale. Place a known 1983 zinc cent (2.50g) on one side of a simple balance using a toothpick as a fulcrum; a 1982 bronze cent (3.11g) will tip the balance noticeably. This method sorts bronze from zinc without any electronics and is popular in coin-roll hunting communities.
The drop test (acoustic method) exploits the different resonance of copper alloy versus zinc: a bronze cent dropped on a hard surface rings with a higher, clearer pitch, while a zinc cent produces a duller thud. This test is less reliable than weighing -- acoustic differences can be subtle, ambient noise interferes, and worn coins behave differently than pristine ones. Use the weight test for definitive identification; treat the drop test as a rough pre-sort only.
| Method | Reliability | How to |
|---|---|---|
| Weight test (digital scale) | Definitive | Weigh on a 0.01g-resolution scale. Bronze = 3.11g; zinc = 2.50g. The 0.61g difference is unambiguous. |
| Balance-scale see-saw | High | Balance a known zinc cent against the unknown coin on a toothpick fulcrum. Bronze is heavier and tips the balance. |
| Drop test (acoustic) | Low-to-moderate -- use as pre-sort only | Drop coin on hard surface. Bronze rings with higher pitch; zinc thuds dully. Not reliable enough for definitive identification. |
| Variety | Composition | Weight |
|---|---|---|
| 1982-P Large Date | Bronze (95% Cu) | |
| 1982-P Small Date | Bronze (95% Cu) | |
| 1982-P Large Date | Zinc (97.5% Zn) | |
| 1982-P Small Date | Zinc (97.5% Zn) | |
| 1982-D Large Date | Bronze (95% Cu) | |
| 1982-D Small Date | Bronze (95% Cu) -- RARE, ~2-3 examples | |
| 1982-D Large Date | Zinc (97.5% Zn) | |
| 1982-D Small Date | Zinc (97.5% Zn) -- common |
From 1909 through 1981, every Lincoln cent was struck from the same bronze alloy: 95% copper and 5% tin and zinc, weighing 3.11 grams. That composition remained stable across wheat reverse (1909-1958) and Lincoln Memorial reverse (1959-1981) designs. The copper content -- 2.9545 grams per coin -- is constant across all those years regardless of reverse design or mint mark.
In 1982, rising copper prices forced the U.S. Mint to switch mid-year to a zinc core with a thin copper plating: 97.5% zinc, 2.5% copper, weighing 2.50 grams. The copper in a post-1982 zinc cent is only the plating -- approximately 0.06 grams, which is statistically negligible for any copper-content calculation.
The critical point for this calculator: 1982 itself produced BOTH compositions at TWO mints (Philadelphia and Denver), combined with a Large Date / Small Date font change. That creates eight documented 1982 varieties. Six of them are the zinc composition; two Denver mint varieties and two Philadelphia mint varieties are bronze. The composition selector above forces you to identify which 1982 variety you have before computing metal content.
Post-1982 zinc cents (1983-present) contain so little copper that this calculator excludes them from copper-content math. Their intrinsic metal value is effectively their zinc content, not copper, and they are not subject to the same speculative hoarding interest as bronze cents.
| Era | Years | Composition | Metal content |
|---|---|---|---|
| 1909-1981 | 95% copper, 5% tin/zinc | ||
| 1982 Bronze varieties | 95% copper, 5% tin/zinc | ||
| 1982 Zinc varieties | 97.5% zinc, 2.5% copper plating | ||
| 1983-present | 97.5% zinc, 2.5% copper plating |
Not every penny is a copper penny. The composition changed definitively after 1981, and 1982 itself produced both alloys. This table lets you verify whether a coin in your hand qualifies as a bronze cent with real copper content, or a zinc cent with only plating. Use the year and, for 1982, the weight test described above to place your coin correctly.
| Year | Composition | Copper content |
|---|---|---|
| 1909-1942 | 95% copper, 5% tin/zinc (bronze) | 2.9545g copper per coin (0.0950 troy oz) |
| 1943 | Steel with zinc plating (wartime emergency) | No copper content (except extremely rare 1943 bronze errors) |
| 1944-1981 | 95% copper, 5% zinc (brass -- tin removed post-WWII) | 2.9545g copper per coin (0.0950 troy oz) |
| 1982 (Bronze varieties) | 95% copper, 5% tin/zinc -- 3.11g | 2.9545g copper per coin -- verify by weight test |
| 1982 (Zinc varieties) | 97.5% zinc, 2.5% copper plating -- 2.50g | ~0.06g copper (plating only) -- negligible |
| 1983-present | 97.5% zinc, 2.5% copper plating | ~0.06g copper (plating only) -- excluded from copper melt math |
Four physical tests help confirm composition when year alone is ambiguous. The weight test is definitive: bronze cents weigh 3.11g; zinc cents weigh 2.50g on a 0.01g-resolution digital scale. The balance-scale see-saw uses a known zinc cent as a reference -- a heavier bronze cent tips the balance on a toothpick fulcrum. The drop test exploits acoustic resonance -- bronze rings with a higher pitch than the duller thud of zinc -- but is less reliable than weighing and should be used only as a rough pre-sort. For 1943, the magnet test is definitive: steel wartime cents are magnetic; genuine 1943 bronze errors (worth $100,000+) are not.
Copper dealers and coin-roll hunters trade sorted pre-1982 bronze cents by the pound, not by the roll. Both measures are useful -- rolls for bank-sourced cents, pounds for bulk dealer transactions.
| Unit | Face value | Copper content |
|---|---|---|
| 1 coin (1 bronze penny) | $0.01 | 2.9545g copper -- $0.0415 intrinsic value at spot |
| 1 roll (50 bronze pennies) | $0.50 | 147.725g copper total -- approx. $2.08 intrinsic at $6.37/lb reference |
| 1 pound of bronze pennies (gross weight basis -- ~146 coins) | $1.46 | ~430g copper -- approx. $6.05 intrinsic at $6.37/lb reference |
| 1 pound of pure copper equivalent (153.5 bronze pennies) | $1.535 | 453.59g copper (1 lb exactly) -- equals copper spot price per pound by definition |
| $100 face value bag (10,000 bronze pennies) | $100.00 | ~29,545g copper -- approx. $415 intrinsic at $6.37/lb reference |
Intrinsic Value = Copper Content (grams) × (Spot Price per lb ÷ 453.59 g/lb)
Copper trades in avoirdupois pounds (1 lb = 453.59 grams), not troy ounces. To convert a penny's copper content into a dollar value, divide the spot price per pound by 453.59 to get a per-gram copper price, then multiply by the coin's copper content in grams. For a bronze penny: 2.9545g × ($6.37 ÷ 453.59) = approximately $0.0415 per coin at the spring 2026 reference price.
The same math expressed per pound of coins: 146 bronze pennies weigh approximately one avoirdupois pound (146 × 3.11g = 453.86g, close enough given measurement variation). Those 146 coins contain 146 × 2.9545g = 431.36g of copper. Converted: 431.36g × ($6.37 ÷ 453.59) = approximately $6.05 of copper content per pound of sorted bronze cents.
A related but different figure is 153.5 pennies per pound of pure copper. That number comes from dividing 453.59g (one pound) by 2.9545g (copper per penny). Those 153.5 pennies contain exactly one pound of pure copper, so their combined copper content equals the copper spot price per pound by definition. The distinction matters: 146 pennies-per-pound is the gross weight trading unit (what a bag of coins weighs); 153.5 pennies-per-pound is the pure metal conversion (what their copper content weighs). Both figures appear in dealer quoting and this calculator supports both.
The ACW (actual copper weight) per bronze penny is 0.0950 troy ounces, which can also be used when comparing to other copper-content sources that express metal in troy ounces. The conversion is: 2.9545g ÷ 31.1035g per troy oz = 0.0950 troy oz. At $6.37 per pound, the per-troy-oz copper price is that figure multiplied by 14.5833 (troy oz per avoirdupois pound).
Post-1982 zinc cents are excluded from this calculation because their copper content (approximately 0.06g of plating) represents less than 1% of a penny's mass and produces a negligible intrinsic value. Including zinc cents in a bulk copper calculation would meaningfully overstate the result. Always sort before calculating.
Selling sorted pre-1982 bronze cents is legal -- federal law prohibits melting, not trading. The market for sorted copper cents operates through three primary channels, each with different payout rates and effort requirements.
| Venue | Typical payout | Friction |
|---|---|---|
| Local coin shop (LCS) | 70-95% of copper spot value per pound | Low friction; immediate cash. Payout varies by dealer volume and current copper price. |
| Online bullion dealers (e.g., Money Metals Exchange) | 75-100% of copper spot, buy prices posted publicly | Shipping required; minimum lot sizes often apply (5-10 lb+). More transparent pricing than LCS. |
| eBay / direct collector sales | 100-150% of copper spot value (premium for pre-sorted bags) | Highest effort; fees, shipping, listing time. Buyers pay a premium for guaranteed-sorted bronze lots. |
Dealers buying sorted bronze cents for resale typically price their retail inventory at $7-10 per pound -- above copper spot -- because sorting labor, storage, and numismatic demand all factor into retail pricing. When you sell, expect buy prices anywhere in the 70-100% of spot range depending on the dealer's current inventory needs and local competition. Lots that are cleanly sorted (pre-1982 only, no zinc contamination) command higher buy prices than unsorted mixed lots. Rare dates and varieties within your lot can be worth far more individually -- always check the rare-date list before selling in bulk.
The spread between what dealers pay for sorted bronze cents and what they charge retail buyers reflects several real costs: the labor of sorting (or verifying that sorting was done correctly), storage, the risk that copper prices move between purchase and resale, and normal business margin. No single spread percentage captures this variability -- the realistic range for dealer buy prices runs from 70% to 100% of current copper spot, depending on market conditions and dealer specifics.
The retail sell side is equally variable. Dealers and online sellers price sorted bronze penny bags anywhere from $7 to $10 per pound when copper spot is near $6.37-$6.67/lb -- a premium of roughly 5-55% above spot on the sell side. The premium compensates for guaranteed sorting, convenient lot sizes, and the collector demand that exists independently of pure metal value. If you are buying bronze cents as a copper commodity, compare retail per-pound prices directly against the spot price shown in this calculator.
The copper penny market also differs from precious metals markets in one structural way: the federal melting prohibition means the 'floor' on bronze cent value is not enforced by actual melt arbitrage (as it would be for silver coins). Instead, the floor is maintained by collector and hoarder demand. In practice, this means bronze cents rarely trade below 80-90% of their copper content value in a liquid market, but the theoretical arbitrage that would enforce a tighter floor in precious metals does not apply here.
Yes. Federal regulation 31 CFR § 82.1 -- effective December 20, 2006 -- prohibits any person from melting, treating, or exporting 1-cent or 5-cent U.S. coins except as authorized by the Secretary of the Treasury. Penalties under 31 CFR § 82.4 include fines up to $10,000, imprisonment up to 5 years, or both. This page calculates intrinsic metal value for reference purposes only. Buying, selling, and accumulating pennies as coins remains fully legal.
Lincoln cents struck from 1909 through 1981 are 95% copper (bronze alloy), as are the bronze varieties of 1982. Post-1982 cents are 97.5% zinc with only a thin copper plating -- about 0.06 grams of copper -- and are excluded from copper-content calculations. The 1943 wartime cent is an exception: those were struck in zinc-coated steel (no meaningful copper content), though extremely rare bronze errors from 1943 do exist.
A pre-1982 bronze Lincoln cent contains 2.9545 grams of pure copper per coin, representing 95% of its 3.11-gram total weight. Expressed in troy ounces, that is 0.0950 troy oz of copper per coin. On a per-pound basis (avoirdupois), 146 bronze pennies weigh approximately one pound of coins and contain roughly 431 grams of copper.
At the spring 2026 reference price of $6.37 per pound of copper, one bronze Lincoln cent carries an intrinsic metal value of approximately $0.0415 -- about 415% of its one-cent face value. The live figure updates with copper spot price: $0.0415 per coin at $6.37 per pound. Note that federal law prohibits melting; this is an intrinsic value reference, not a realized transaction value.
Weigh it. A digital scale calibrated to 0.01 grams will show 3.11g for a bronze 1982 cent and 2.50g for a zinc one -- the 0.61g difference is unambiguous. Without a scale, place the coin on one end of a toothpick balance against a known post-1983 zinc cent; the bronze coin is heavier and tips the balance. The acoustic drop test (bronze rings, zinc thuds) is less reliable and should be used only as a rough pre-sort.
Two different numbers get quoted and both are correct for different questions. Approximately 146 bronze pennies weigh one avoirdupois pound of coins (453.59g ÷ 3.11g per coin = 145.85, rounded to 146). That is the gross-weight trading unit -- how dealers describe 'one pound of sorted copper pennies.' A separate figure, 153.5 pennies, is the number of bronze cents whose combined copper content equals exactly one pound of pure copper (453.59g ÷ 2.9545g copper per coin). This calculator defaults to 146 (gross weight basis) to match dealer convention.
Under 31 CFR § 82.4, penalties include a fine of up to $10,000, imprisonment of up to 5 years, or both. The regulation was enacted under the authority of 31 U.S.C. 5111(d). Additional federal statutes -- including 18 U.S.C. 1001(a) for false statements in connection with federal law evasion -- may also apply depending on circumstances. The prohibition covers melting, treating, and exporting 1-cent and 5-cent coins.
Yes -- selling sorted pre-1982 bronze cents as coins is entirely legal. The federal prohibition targets melting and treating, not trading. A robust dealer market exists for sorted bronze cents sold by the pound. Local coin shops, online bullion dealers, and private collectors all buy pre-1982 cents. Expect buy prices in the 70-100% of copper spot range from dealers, with eBay and direct collector sales sometimes reaching 100-150% of spot for cleanly sorted lots.
Yes. Accumulating, storing, sorting, and trading pre-1982 bronze cents as coins is legal. The 31 CFR § 82 prohibition applies only to the act of melting, treating, or exporting the coins. Many collectors and investors sort cents by composition (using Ryedale or similar mechanical sorters) and trade bags of bronze cents as a commodity. Export limits do apply: travelers may carry up to $5.00 in pennies out of the country; shipments for numismatic purposes are limited to $100 per shipment.
The 1982-D Small Date bronze cent is one of the rarest modern U.S. coins -- only approximately 2-3 confirmed examples exist. The first confirmed example sold for $18,800 at Stack's Bowers in 2017; subsequent examples sold for $10,800 and $8,400. Current estimates place value at $10,000 or more depending on grade. Identification requires a weight of 3.07-3.11g (vs. 2.50g for the common zinc version) plus professional grading to confirm bronze composition.
Rising copper prices in the early 1980s pushed the intrinsic metal value of the bronze cent above one cent, creating an arbitrage incentive to melt coins for their copper content. To prevent this, the Mint switched mid-year 1982 to a zinc-core design with copper plating, reducing the coin's weight from 3.11g to 2.50g and its copper content from 95% to just 2.5% plating. The date font change (Large Date vs. Small Date) occurring simultaneously was an unrelated die modification that created the eight documented 1982 varieties.
The drop test uses acoustic resonance: drop a bronze cent on a hard surface and it produces a higher-pitched ring; a zinc cent produces a duller, lower-pitched thud. The difference exists because copper alloy and zinc have different elastic properties. However, the test is less reliable than weighing -- worn coins, soft surfaces, and ambient noise all affect results. Use a 0.01g digital scale for definitive identification, especially for 1982 cents where composition determines value.
Key-date Lincoln cents can be worth hundreds or thousands of dollars -- the numismatic value is your only legal path above face value. Check your coins before selling them by the pound.
Identify rare wheat cents in your collection →This page provides copper penny intrinsic metal value for informational reference only; verify all values against live spot prices and consult a professional numismatist before any transaction. Melting U.S. cents is prohibited under 31 CFR § 82.