1943 Copper Penny Value: Real Bronze Error or Fake?

A genuine 1943 copper penny, properly a bronze cent struck by mistake, has sold for roughly $240,000 to $500,000 at auction in recent years, as of October 2026, and the unique Denver coin brought $840,000 in 2021. Only about two dozen are known. Nearly every copper-colored 1943 penny people find is a fake: a steel cent plated with copper or a 1948 with the date altered, worth a few cents.

Two quick tests at the kitchen table settle most cases. A real bronze cent does not stick to a magnet and weighs about 3.11 grams. The ordinary 1943 cent is zinc-coated steel, sticks to a magnet and weighs about 2.70 grams. If your coin sticks, you can stop here, and our guide to the 1943 steel penny covers what it is worth.

Quick answer

• Genuine 1943 bronze cents have sold for $240,000 (PCGS AU50, Heritage, January 2023) to $456,000 (1943-S, PCGS AU55, Stack's Bowers, March 2026).
• The only known 1943-D bronze cent sold for $840,000 at Heritage in January 2021.
• A copper-colored 1943 that sticks to a magnet is a plated steel cent, worth a few cents.
• A copper 1943 that does not stick is most often an altered 1945, 1948 or 1949 date.
• Any coin that passes both the magnet and weight tests should go to PCGS or NGC before anyone talks price.

Why do 1943 copper pennies exist at all?

Because a few leftover bronze blanks were struck by mistake. In 1943 the US Mint switched the cent from bronze to zinc-coated steel to save copper for the war. A small number of bronze planchets from 1942 stayed in the bins and feeding equipment and were struck with 1943 dies at all three mints. Nobody noticed at the time.

Counts vary as coins are found and authenticated. According to a March 2026 CoinWeek report on a 1943-S sale, research lists 17 known from Philadelphia, 7 from San Francisco and a single coin from Denver. Greysheet's catalog lists the Philadelphia coin as "17+ est. known." That rarity, plus decades of newspaper stories, is why the coin is famous and why so many fakes exist.

How do you tell if a 1943 penny is really copper?

Use a magnet, a scale and a loupe, in that order. Each step removes most of the remaining fakes.

1. Magnet test. Hold a strong magnet, such as a fridge magnet with a small rare-earth disc, against the coin. Steel jumps to it. Bronze does not react. If it sticks, it is a steel cent, plated or not, and the search is over.
2. Weigh it. Use a scale that reads to 0.01 grams if you can, or at least 0.1 grams. A genuine bronze cent weighs about 3.11 grams. A steel cent weighs about 2.70 grams. A copper-colored coin at 2.7 grams is plated steel no matter what the magnet said. Cast copies often weigh noticeably off.
3. Look hard at the date. Under a 5x or 10x loupe, compare the 3 with the other digits and with an ordinary 1943 steel cent. Altered dates often show tool marks, a 3 with the wrong shape or spacing, or disturbed metal around the last digit. The US Mint itself warns that 1945, 1948 and 1949 cents are altered to read 1943.
4. Check the mint mark. A D or S sits under the date. No letter means Philadelphia. A 1943-D bronze cent other than the one known example should be treated with great suspicion.
5. Check the surfaces and edges. Plated coins can show a seam or a slightly soft, puffy look to the details, and plating may wear through on the high points to gray metal beneath. Cast fakes often have a grainy surface and rounded lettering.
6. Do not clean it, file it or test it with acid. Damage cuts the value of a genuine coin sharply and ruins evidence of a fake.
7. Send any survivor to PCGS or NGC. A coin that is not magnetic, weighs about 3.11 grams and shows no sign of an altered date is exactly what the grading services exist to settle.

What is a 1943 copper penny worth?

The table shows recorded sales for genuine coins and realistic values for the things people actually find, as of October 2026.

Greysheet's retail guide puts a Philadelphia coin in MS62 brown at about $462,000, or about $554,500 with a CAC sticker. The Denver coin also changed hands privately in 2010 for about $1.7 million, so the 2021 auction price shows how much the top of this market can move.

What makes one genuine coin worth more than another?

Mint, grade and pedigree. Philadelphia coins are the "common" version, with about 17 known. The San Francisco coins are rarer at about 7, and the Denver coin is unique, which is why it holds the record. Within each mint, higher grades and original brown surfaces bring more. A CAC sticker, which means CAC agrees the coin is solid for its grade, adds to the price: Greysheet's retail guide values an MS62 brown coin about $90,000 higher with one. Coins with a published history, such as those from well-known collections, sell with more confidence.

Every genuine example is already documented, photographed and tracked by specialists. That is one reason a new discovery gets so much scrutiny: it has to be a coin nobody has seen before.

Why are there so many fake 1943 copper pennies?

Because the real coin is famous, valuable and easy to imitate. Three kinds of fake turn up again and again, and they are worth knowing by name.

• Copper-plated steel. Genuine 1943 steel cents were plated with copper and sold as souvenirs or "rare" coins for decades. They are the most common fake by far, and the magnet catches every one.
• Altered dates. A bronze 1945, 1948 or 1949 cent has its last digit filed or tooled into a 3. These pass the magnet and weight tests, because they really are bronze, so the date is where you have to look.
• Casts and struck copies. Made from scratch to look like the real thing. Detail is usually soft, the surfaces grainy and the weight off.

The US Mint has warned about all three for years, and the grading services see them every week. Assume any copper 1943 is one of them until proven otherwise.

A worked example

Say you find a copper-colored 1943 penny in a jar of your grandfather's wheat cents. It looks like an ordinary brown penny with a 1943 date and no mint mark.

First, the magnet. It sticks firmly. That alone tells you it is a steel cent that has been copper plated, probably sold decades ago as a novelty or put in a jar by someone hoping to fool a buyer. It is worth a few cents, and you can stop.

Now say it does not stick. You weigh it on a jewelry scale and get 3.10 grams, right for bronze. Under a loupe, the 3 looks a little different from the 3 on an ordinary 1943 steel cent, with faint tool marks around it. That points to a reworked 8, so the coin is very likely an altered 1948 cent worth one cent. If the date looked completely clean, the honest next step would be PCGS or NGC, not an auction listing.

Common mistakes

• Skipping the magnet. It takes five seconds and eliminates most fakes.
• Trusting color. Bronze, plated steel and toned steel can all look brown in a photo.
• Assuming a copper 1944 is rare. 1944 cents are normally bronze-colored brass and very common. The rare 1944 error is the reverse: a 1944 struck on a leftover steel blank, which does stick to a magnet.
• Selling or buying from a listing. Online listings of "1943 copper pennies" for a few hundred dollars are nearly always plated or altered coins.
• Cleaning the coin to "see it better." It removes evidence and value.

How WorthPic reads 1943 penny photos

WorthPic runs on the newest and most capable AI model available, tuned for exactly this kind of identification. From photos of both sides it reads the date, the mint mark and the coin's color and wear, and it looks for the visible signs of the common fakes: plating wearing through to gray, a reworked last digit, soft cast detail. It then gives an honest value range in US dollars with a most likely figure and says which extra photo or test would settle the question. What it cannot know from a photo is what the coin is made of. A magnet result and a weight reading to 0.1 gram tell more than any picture, and WorthPic asks for both. It identifies and estimates. It does not authenticate, grade or appraise, and for a coin that might be a genuine bronze 1943 only a grading service can say yes.

What to photograph

• The obverse straight on in even daylight, with the date and any mint mark sharp.
• The date close up, filling the frame, which is where altered coins give themselves away.
• The reverse straight on.
• The edge, to show any plating seam.
• A photo of the coin on the scale with the reading visible.
• A short note on the magnet result.

When to get it looked at in person

If the coin sticks to a magnet, no expert is needed. If it does not stick and weighs about 3.11 grams, show it to an experienced local coin dealer for a quick first look at the date, then submit it to PCGS or NGC. Both authenticate this coin routinely and have seen every type of fake. Expect to declare a high value and pay the fee tier that matches, and use insured, registered shipping. Do not sell it raw to anyone on the strength of a photo. For other dates in the same jar, our guides to what pennies are worth money and wheat penny value are the place to start.

Sources

• CoinWeek: 1943-S bronze cent, PCGS AU55, sells for $456,000: the March 2026 sale, the 17, 7 and 1 count by mint, and the 1943-D's $840,000 Heritage sale in January 2021.
• Greysheet: 1943 bronze cent, MS brown: retail values, 3.11 g weight, Heritage sales of $240,000, $312,000 and $348,000.
• Greysheet: 1943 bronze cent, MS red-brown: retail guide value of about $480,000 for an MS61 red-brown coin.