20 Pesos 1988 (Guadalupe Victoria): Value & How to Sell

If you inherited or found a Mexican 20 pesos coin dated 1988, here is the honest answer up front: in circulated condition it is worth only a few cents to maybe a dollar. It is one of the most common Mexican coins of its era, with 355,200,000 pieces struck. No silver, no gold, no rare-date premium.

And one more thing right away: the portrait on it is almost always mislabeled. Sellers and even some catalogs call it "Cuauhtemoc." It is not. The face on the reverse is Guadalupe Victoria, the first president of Mexico (1824 to 1829). Check the legend yourself, it literally reads GUADALUPE VICTORIA. If a listing says Cuauhtemoc, the seller is guessing.

What this coin actually is

This is catalog type KM# 508, a 20 pesos denomination that circulated from 1985 to 1990. It comes from the last years of the "old peso," the currency Mexico used before the 1993 monetary reform that lopped off three zeros and introduced the Nuevo Peso. This was everyday pocket change, the kind that passed hand to hand at the market and on the bus while inflation quietly ate away its purchasing power.

Quick specs, exactly as struck:

• Metal: aluminum-bronze (a golden-yellow brass alloy). No precious metal content at all.
• Weight: 5.87 grams
• Diameter: 20.99 mm
• Edge: reeded
• Mint: Casa de Moneda de Mexico (mint mark Mo)
• Reverse: three-quarter portrait of Guadalupe Victoria, value 20, year 1988, mint mark Mo

Because it contains no silver or gold, it has no melt value floor. Everything this coin is worth comes down to one thing: condition.

Is the 1988 rare? No.

The 1988 is one of the most common years in the entire series. Here is how it stacks up against the scarcer dates of the same type.

So if you were hoping the 1988 was the rare one, it is the opposite. The dates collectors actually chase in this series are 1986 and 1985, and even those are inexpensive coins.

What is your 1988 worth in USD?

Be realistic. In worn, circulated condition this coin is worth little more than its sentimental value, common date, common alloy, hundreds of millions made. You are looking at roughly the price of a candy bar, if that.

The only real value appears in uncirculated examples: original golden luster, no bag marks, no scratches, sharp detail. Aluminum-bronze dulls and scuffs fast with handling, so a bright, mark-free 1988 is genuinely harder to find than the mintage suggests. Even then, this is a low-value coin, think a few dollars for a nice uncirculated piece, not a payday.

Condition is the entire story here. A circulated 1988 and an uncirculated 1988 can differ by a wide margin in percentage terms while both stay under the price of a coffee.

The "it's Cuauhtemoc so it's valuable" myth

Two myths cling to this coin. First, that it pictures Cuauhtemoc, the last Mexica tlatoani. It does not, that is a naming error repeated in listings. Cuauhtemoc did appear on other Mexican denominations (such as the older 50 centavos), but not on this aluminum-bronze 20 pesos. Second, that being "old" and pre-1993 makes it worth money. Old plus common equals cheap. Age alone drives nothing.

How to tell if yours is genuine

Counterfeits of a coin this cheap are rare (there is no profit in faking it), but if you want to confirm:

• Weight should be close to 5.87 grams.
• Diameter about 21 mm.
• Edge must be reeded.
• Color the warm golden yellow of aluminum-bronze.
• Reverse legend must read GUADALUPE VICTORIA, with mint mark Mo and the year 1988.

If the weight or edge is off, be suspicious. Otherwise, what you have is almost certainly a genuine, common coin.

Where to sell it

Because it is so common, you will find this coin easily among collectors and at coin shops, which also means it does not command a premium. Selling a single circulated 1988 rarely makes sense on its own. Where these do move is in bulk lots of old-peso coins, or as a filler in a pre-1993 Mexican peso set. If you have a box of inherited coins, sort out the silver pieces first, those are where the money usually is.

To find a buyer, check the Pesoteca shop directory at /tiendas, listed by state. And if you have a mixed inheritance you are trying to figure out, the best pieces are almost never the aluminum-bronze coins.

Got a box of old Mexican coins and not sure which ones matter? Post clear photos in the Pesoteca forum and we will help you separate the common from the keepers.

The circulating Mexican peso coins of the second half of the 20th century were struck in alloys that changed according to the cost of metals and inflationary processes: .720 silver in the $1, $5, $10, $25 denominations during the 1940s-50s; cupronickel from the 1970s on; aluminum bronze and stainless steel in the 1980s; pieces with historical figures (Hidalgo, Cuauhtémoc, Juárez, Madero) in the late 1980s just before the transition to Nuevos Pesos in 1992. 1988 corresponds to the period when this variant was in circulation. Cuauhtémoc, the last Aztec tlatoani, a symbol of Indigenous resistance, appears on the circulating Mexican $20 and $50 denominations.