1810 Mexican 8 Reales with Countermarks: Value & How to Sell

If you inherited or found an 1810 Mexican 8 Reales with strange stamps punched into it, here is the honest answer: most circulated examples trade in the low hundreds of US dollars, but the countermarks (resellos in Spanish) can push the right piece into the thousands. The metal alone gives it a floor: this is real 0.900 silver, not a token.

The 8 Reales was the Spanish colonial silver dollar, minted in New Spain (colonial Mexico). The 1810 date is significant. That was the year the Mexican War of Independence began, so coins from that year carry historical weight beyond their silver content. What makes yours unusual are the countermarks: extra stamps applied after the coin was struck, often by another government or authority, to authorize the coin to circulate in a different country or era. Those stamps can add real value, or almost nothing, depending on what they are.

What your 1810 8 Reales is actually worth in 2026

Value depends on three things: the base coin's grade, whether the countermark is genuine and identifiable, and where the countermark came from. A plain 1810 8 Reales in worn, circulated condition typically sells in the range of 40 to 150 US dollars, mostly reflecting its silver. An identifiable, sought-after countermark can multiply that. Rare host-date and countermark combinations in high grade have sold for well over 1,000 US dollars at major auctions.

The reason countermarked coins are tricky: some countermarks are prized by specialist collectors (certain Asian chop marks, specific national revalidation stamps), while others are essentially graffiti that lowers eye appeal. There is no single flat price. That is why a certified example or an expert opinion matters so much for this coin.

Coin	Year	Condition	Typical value (USD)
8 Reales, no countermark	1810	Circulated (Fine/VF)	40 to 150
8 Reales, common countermark	1810	Circulated	100 to 400
8 Reales, rare/identified countermark	1810	VF to XF	400 to 1,500+
8 Reales, high grade certified	1810	AU/UNC	1,000 to several thousand

These are market ranges, not guarantees. The exact number for your coin comes down to which mint mark, which assayer, and which countermark it carries.

The specs that prove it is genuine

Here are the numbers your coin must match:

• Metal: 0.900 fine silver
• Weight: 25.8 grams
• Diameter: 38 mm
• Edge: varies by mint; original colonial 8 Reales had a decorated (not smooth) edge on many issues, so check yours carefully
• Assayer initials: the letters near the design (this issue references assayer HJ) identify who certified the silver

If your coin weighs noticeably less than 25.8 grams or measures far off 38 mm, treat it as suspect. A real silver 8 Reales gives a clear, ringing tone when balanced on a fingertip and tapped gently. Cast fakes sound dull and short. That said, sophisticated counterfeits exist for coins this valuable, and countermarks are sometimes faked onto genuine host coins to inflate the price. For anything that might be worth more than a few hundred dollars, professional grading from NGC or PCGS is the only real protection.

The myth: "an 1810 coin must be worth a fortune"

Age does not equal value. The 8 Reales was minted in enormous quantities across the colonial period and circulated worldwide, so a common date in worn condition is not rare. What drives the price of your piece is the countermark and the grade, not simply the year on the face. Do not assume "1810" plus "old" equals a jackpot. Most examples you will actually find are worth double or triple their melt value, not thousands.

The genuine six-figure Mexican rarities are a different category entirely (certain early republic and gold issues), and this is not one of them by default. A specific, verified countermark in top grade is where the upside lives.

How to check and sell yours

1. Weigh and measure it. Confirm 25.8 grams and 38 mm before anything else.
2. Photograph both sides and the edge in good light, including a close-up of the countermark. The countermark is the whole story for this coin.
3. Identify the countermark. This is where you need help. Post clear photos in the Pesoteca forum and let collectors who know colonial resellos weigh in.
4. Get it certified if it looks genuine and clean. NGC and PCGS grade and authenticate countermarked colonial coins, which both proves it is real and sets a market value.
5. Sell through the right channel. For a coin like this, a specialist matters. Established auction houses (Heritage, Stack's Bowers) handle certified colonial silver well. For direct sale, use a verified dealer from the Pesoteca shop directory or the buy-and-sell forum. Avoid dumping it to the first bidder on a general marketplace, where countermarked coins are routinely underpriced or faked.

Want a straight answer on what your specific piece is worth? Post the weight and clear photos of both sides and the countermark in the Pesoteca forum and get it identified before you sell anything.

This piece belongs to the category of counterstamps and countermarks applied over already-struck pieces of eight (reales de a ocho), a practice used by both insurgents and royalists during the War of Independence.

The government of New Spain in 1810 was headed by Francisco Javier Venegas, who received the outbreak of Hidalgo's insurgency on September 16.

The piece belongs to the category of counterstamps and countermarks, punches applied over already-struck pieces of eight to officially revalidate them, move them to another jurisdiction, or mark them with an insurgent or royalist symbol. Each counterstamp carries a political reading: Morelos's crowned M, the seal of Zongolica, the M.V.A., and other families documented by colonial catalogs.

The declared origin of minting is: counterstamp over a previously struck piece of eight. The initials HJ accompanying the counterstamp identify the official or commander who authorized the re-marking of the earlier piece.

The colonial catalogs trace this piece within the families of the Mexico City piece of eight, with prices that respond to rarity by year and assayer's signature.

Year of the Grito de Dolores on September 16, the formal start of the Mexican War of Independence.