1 Centavo 1973 Copper Coin: Value & How to Sell

Found a tiny copper coin marked "1 centavo" and dated 1973? In most conditions it is worth under 5 USD. This is one of the smallest coins México ever put into circulation, and while it is not rare, a crisp uncirculated example with original shine can be worth more than the beat-up ones people usually inherit.

Here is the honest breakdown of what it is, what drives the value, and how to check and sell yours.

What this coin actually is

The 1 centavo ("centavo" is the Mexican equivalent of a US cent, one hundredth of a peso) from 1973 was the lowest denomination in circulation at the time. It was struck by the Casa de Moneda de México, the Mexican Mint, in copper.

By 1973, the centavo had almost no buying power left. It was minted more to complete the decimal system than for any real everyday use, and coins this small disappeared from circulation not long after. That short, late-in-life run is part of what interests collectors today.

Specifications

At 13 mm, it is barely the size of a thumbnail, which is exactly why it grabs attention when you hold one.

What it is worth in 2026

Let's set expectations. This is not a rare coin, and being from 1973 does not make it valuable on its own. Age alone almost never drives coin value; rarity, demand, and condition do.

• Circulated, worn, or corroded: these are common. Expect roughly 0.25 to 2 USD, mostly of interest to type collectors filling a gap.
• Uncirculated with original luster and sharp detail: here it gets interesting. Because the coin is small and made of copper, it damaged and oxidized easily, so genuinely pristine examples are scarce. A clean, red uncirculated piece can bring a modest premium, often several dollars to low double digits depending on the buyer and grade.

The value is in the condition, not the date. A brilliant, undamaged 1973 centavo is harder to find than the mintage numbers suggest, because so many were spent, dropped, and left to corrode.

Errors and varieties: read this before you get excited

Genuine mint errors (off-center strikes, die rotation, double strikes) can multiply the value of a small coin like this. The catch: most of the "errors" people post online are not mint errors at all. They are post-mint damage, meaning dings, scratches, and corrosion that happened after the coin left the mint. That kind of damage lowers value, it does not raise it.

If you think you have a real error, don't guess. Post clear photos to the Pesoteca forum so collectors can tell you whether it is a factory error or just wear and tear.

How to tell if yours is genuine

For a low-value copper coin, sophisticated fakes are rare, but it is still worth a two-minute check:

1. Weigh it on a jewelry scale. It should be right around 1.52 grams.
2. Measure the diameter with calipers. It should be 13 mm.
3. Look at the relief. Real strikes have crisp raised detail. Flat, mushy lettering or oddly distributed color can signal a fake or a heavily damaged piece.

Compare against the specification table above. Wrong weight, wrong diameter, or flat relief are the usual red flags.

Where to sell it

If you want to sell, don't dump it to the first Facebook buyer. Do this instead:

• Photograph the coin clearly: front (obverse), back (reverse), and edge.
• Check its condition against this page so you know the realistic range.
• Take it to a verified shop in the Pesoteca dealer directory for an in-person appraisal, or list it in the Pesoteca buy-and-sell forum where collectors, not middlemen, set the price.

For US sellers, keep in mind that on a common circulated example the shipping cost can exceed the coin's value. These pieces make the most sense sold as part of a group, a type set, or when you have a genuinely uncirculated example.

If you inherited a whole box of Mexican coins, the 1973 centavo is likely one of the least valuable in it, but a few others in the same box could be worth real money. Post a photo of the full group in the forum and let the community point out which ones deserve a closer look.

Mexican circulating centavo coins during the second half of the 20th century were struck in alloys that changed according to the cost of metals: copper, bronze, and brass in the low denominations (1¢, 5¢, 20¢); cupronickel for the intermediate denominations (25¢, 50¢, and later 10¢); and .720 silver for some 25¢ and 50¢ pieces in the 1950s. Each alloy change produced a distinct variant of the same face value. 1973 corresponds to the period when this variant was in circulation, before the transition to Nuevos Pesos in 1992. The Mexican Mint kept the basic design of the National Coat of Arms on the obverse and the numeric value on the reverse throughout this era.