1964 Mexican Silver Peso (Morelos)

If you inherited or found a 1964 Mexican silver peso, here's the honest answer: it's worth a few dollars for a circulated example, most of that being its silver content. It's a common coin, not a rare one. But it does contain real silver, which gives it a price floor, and clean uncirculated examples carry a modest premium.

This is the coin most Americans mean when they say "old Mexican silver peso." It shows the profile bust of José María Morelos y Pavón, a Mexican independence hero, which is why collectors call the whole series the "Morelos peso." The 1964 date is notable for one reason: it's near the end of the line for silver in this denomination. After the mid-1960s, Mexico switched the peso to copper-nickel, so silver disappeared from circulating pesos entirely.

What it is (the specs that matter)

The 1964 one-peso coin is struck in .720 fine silver, meaning 72% pure. Here are the numbers you can verify with a scale and a caliper:

• Metal: .720 silver (72% silver, 28% copper)
• Weight: 16.06 grams
• Diameter: 34.5 mm
• Edge: reeded
• Obverse: Mexican national coat of arms (eagle in profile)
• Reverse: bust of José María Morelos y Pavón
• Mint: Casa de Moneda de México (Mexico City Mint)
• Catalog reference: KM# 459

Each coin contains roughly 0.3716 troy ounces of pure silver. That silver content is the reason it will never be worth zero, no matter how worn it is.

What a 1964 silver peso is actually worth

Most 1964 pesos you'll come across are heavily circulated, and those trade close to their melt value. The premium above melt only kicks in for coins that kept their original shine and sharp detail on the Morelos bust.

Because silver prices move daily, the melt value floats. To calculate it yourself: multiply the current silver spot price per troy ounce by 0.3716. That gives you the raw metal value of a single coin. A dealer will typically pay somewhat under melt, and sell somewhat over.

Be realistic here. A single 1964 peso is a low-value coin. The reason people hold onto them is the silver, and the reason collectors want them is to complete a date-by-date set of Morelos pesos, not because any one date is scarce.

The Morelos peso series (context in one paragraph)

The Morelos peso ran from 1947 onward, and the silver content dropped over the years as silver got more expensive. Earlier dates in the series carried more silver; by the 1960s the fineness was down to .720. If you have a box of these, sort them by date, because the pre-1957 and later low-silver issues are different coins with different silver weights. The 1964 sits at the tail end of the silver era.

Where to sell a 1964 Mexican silver peso

Since this coin's value is tied to its silver, sell to someone who will weigh it in front of you and quote against the current spot price. Your options:

• A verified coin shop from the Pesoteca shop directory, which can appraise it on the spot.
• The Pesoteca buy-and-sell forum, where collectors trade directly.
• Any reputable precious-metals or bullion dealer in the US, since the melt value is the baseline.

Photograph the obverse, reverse, and edge before you sell, and check the value range on this page first. Don't dump a bag of these to the first Facebook offer; a fair buyer will price them against silver spot.

How to tell if yours is genuine

Counterfeits of low-value silver coins are uncommon, but easy to catch. Weigh the coin on a jewelry scale and measure the diameter with a caliper, then compare to the specs above: 16.06 grams and 34.5 mm. Fakes usually miss on weight or diameter, show flat relief, or have off-color surfaces. Be suspicious of any offer priced well below the coin's silver value, that's a red flag, not a bargain.

One more note on the myth of "error coins." Genuine mint errors (off-center strikes, die rotations, double strikes) can raise a coin's value, but the vast majority of "errors" people post online are post-mint damage: dings, scratches, corrosion. Those lower the value, they don't raise it. If you think you have a real error, post clear photos to the Pesoteca forum and let the community weigh in.

Have a box of old Mexican silver pesos and want to know which dates are worth setting aside? Post your best photos in the forum and we'll help you sort the common from the keepers.

Circulating Mexican peso coins of the second half of the 20th century were struck in alloys that changed according to metal costs and inflationary processes: .720 silver in $1, $5, $10, $25 denominations during the 40s-50s; cupronickel from the 70s on; aluminum bronze and stainless steel in the 80s; pieces with figures (Hidalgo, Cuauhtemoc, Juarez, Madero) in the late 80s just before the transition to Nuevos Pesos in 1992. 1964 corresponds to the period when this variant was in circulation.