Mexican 20 Centavos 2008 (Aluminum-Bronze): Value Guide

Let's be direct: the 2008 Mexican 20 centavos coin is worth its face value in almost every case, roughly 20 to 25 US cents at auction in top condition. Mexico's mint struck 214,313,000 of them in that single year, so this is one of the most common circulation coins of its era, not a rare find.

If you inherited a jar of Mexican change and this is in it, you have a common circulation piece. It contains no silver and no gold, so there is no precious-metal value to recover. The only versions that bring more than face value are flawless uncirculated examples or a genuine, verifiable minting error.

What it's actually worth (in USD)

Here is the honest breakdown. The Spanish term centavos simply means cents; 20 centavos is one-fifth of a Mexican peso.

Condition	Realistic value	Notes
Circulated, worn	Face value (about 1 US cent equivalent)	Spendable pocket change, no collector premium
Uncirculated (UNC)	About 20 to 25 US cents	Numista catalog lists it near 4 to 5 pesos
Verified mint error	Case by case	Only if authenticated by a grading service

The numbers above are not a typo. With over 214 million struck, supply crushes any premium. Even a perfect coin trades for pennies unless a collector specifically needs it for a set.

What the coin is

This is the small version of the 20 centavos, the one Mexico's central bank (Banxico) struck in aluminum-bronze between 1992 and 2009. Aluminum-bronze is a copper alloy mixed with aluminum. It looks gold-colored but holds no precious metal.

Your 2008 piece has these specs, which are worth knowing if you want to confirm what you have:

• Weight: 3.04 grams
• Diameter: 19.5 mm
• Edge: plain (smooth)
• Composition: aluminum-bronze (copper and aluminum)

The front (obverse) carries the Mexican national coat of arms, the eagle on a cactus. The back (reverse) shows the value "20" in the center, the year above, and the mint mark "Mo" below (Mo stands for the Mexico City mint, Casa de Moneda de Mexico). Around the edge runs a border of stylized glyphs taken from the Piedra del Sol, the Aztec sun stone: the Acatl symbol, meaning "reed," one of the day-signs of the Mexica calendar.

Is it rare? No.

Mintage tells the whole story. The 214,313,000 figure for 2008 alone means these coins are everywhere. Age does not make a coin valuable; scarcity and demand do, and this coin has neither in its favor. If you were hoping for a windfall, this particular piece is not it.

The only realistic paths to a premium are a top uncirculated grade or a real, documented minting error (off-center strike, wrong planchet, major die break). Scratches, discoloration, or ordinary wear do not count as errors.

How to tell if yours is genuine

Counterfeits of a coin worth a few cents are almost nonexistent because there is no profit in faking it. Still, if you want to verify:

1. Weigh it. It should hit 3.04 grams. A jewelry scale is enough.
2. Measure it. Diameter should be 19.5 mm. A caliper confirms it.
3. Check the edge is plain, the obverse shows the coat of arms, and the reverse shows the "20" with the calendar glyph border.

Those three checks rule out any crude fake instantly.

Where to buy or sell

Since this is a common coin, only high grades (UNC or better) justify paying above face value. If you are assembling the full aluminum-bronze 20 centavos series or placing it within Mexico's new pesos era, it slots in easily and cheaply. To buy a clean example or to find a dealer, check the Pesoteca shop directory.

Don't pay shipping fees to sell a handful of these. If you have a full jar of Mexican coins, the smart move is to sort out anything silver first (older peso and centavo coins from before the 1970s often are) and treat coins like this 2008 piece as pocket change.

Context of the twenty-centavo piece of 2008

This twenty-centavo coin (KM#548) was struck by the Mexico City Mint in 2008, under the presidency of Felipe Calderón Hinojosa. It is part of the family of circulating coins in an alloy of bronze and aluminum with nickel that Banxico issued between 1992 and 2009, with a 19.5 mm diameter and 2.26 g weight.

The year in Mexico. It is the year of the global financial crisis that began in September with the collapse of Lehman Brothers. The peso depreciated from 10.36 to 13.83 per dollar between January and December. Inflation closed at 6.53%, the highest since 2000. That year, according to INEGI's INPC, annual inflation closed at 6.53% and the Bank of Mexico's FIX exchange rate ended the year at 13.83 pesos per dollar.

How it circulated. In 2008 these pieces circulated during the worst external economic blow since 1994-1995. Small change became more important in the household and neighborhood economy. Public services accepted these pieces to make exact payments.

Numismatic note. The 2008 die is from an abundant minting despite the context. Banxico kept production up to ensure enough fractional coinage in circulation. The obverse design is Banxico's official National Coat of Arms and the reverse shows the face value together with the year of minting. From year to year the design remains identical and only the engraved date changes, so the visible difference is minimal. Internal die variations, when they exist, are documented in the Bank of Mexico catalog.