1812 Copper 8 Reales with Countermarks: Value Guide

Most old Mexican colonial coppers are worth tens of dollars, not thousands. If you inherited or found a 1812 copper 8 reales with countermarks (resellos), the honest answer is: a circulated example usually trades in the range of a few tens of dollars up to a few hundred USD, and only the sharpest, verified pieces climb higher. Genuine, well-documented countermarks are what move the needle. Here is how to read what you actually have in 2026.

What this coin is

This is an 8 reales struck in copper during the Viceroyalty of New Spain (Nueva España), the Spanish colonial administration that ran Mexico before independence. The date is 1812, a period when the war of independence disrupted normal silver coinage and local emergency (necessity) issues in base metal appeared in circulation.

The defining feature is the countermarks (resellos): small stamps punched into the coin after it was originally struck. Authorities applied these to authorize, revalidate, or extend a coin's legal circulation. A countermark is not damage. It is an official mark, and on the right piece it adds interest and value rather than subtracting it.

Physical specs to check against your coin:

• Metal: copper
• Weight: 22.87 grams
• Diameter: 35 mm
• Edge: plain (smooth)

If your coin does not land close to those numbers, that alone is a red flag. Colonial coppers were crude by modern standards, so weights vary somewhat, but a piece that is far off in weight or diameter deserves suspicion.

What it is actually worth

Value on this type is driven by three things: condition (grade), the type and legibility of the countermark, and authenticity you can prove. Date and metal alone do not make it rare.

Item	Detail	Typical value (USD)
1812 copper 8 reales, heavily worn	countermark faint or unclear	roughly 20 to 75
1812 copper 8 reales, clear countermark	legible stamp, honest wear	roughly 75 to 300
Sharp example, strong detail	attractive surfaces, clear resello	several hundred and up
Certified high grade / rare countermark	NGC or PCGS attributed	can reach four figures

These are working ranges for the type, not a guaranteed quote for your specific coin. Colonial copper with countermarks is a specialist area, and prices swing hard on eye appeal and how desirable the particular countermark is. A boldly stamped, clearly attributed resello can be worth many times a worn, ambiguous one.

What this coin is not: a million-dollar rarity. Copper 8 reales of this era are historically interesting, but they are not the trophy silver pieces that set auction records. Anyone telling you an ordinary circulated copper 8 reales is worth a fortune is selling a story.

The countermark is where the money is

On most Mexican colonial coppers, the base coin is common. The specific countermark is what a serious collector pays for. Different regional authorities used different punches, some scarce, some abundant. A crisp, correctly attributed countermark can turn a 50-dollar coin into a several-hundred-dollar coin.

This is exactly why you should not scrub, polish, or "clean" the coin. Cleaning destroys the original surfaces and the countermark detail collectors want, and it cuts value sharply. Leave it as found.

How to tell if yours is genuine

Fakes and altered coins circulate in this category, including real coins with fake countermarks added later. Run these checks:

1. Weigh and measure it. Target is 22.87 g and 35 mm. Use a scale that reads to 0.01 g.
2. Look at the relief. Genuine strikes have depth and texture. Cast fakes look soft, flat, and sometimes show tiny bubbles or a seam on the edge.
3. Study the countermark. A real countermark is punched into the metal and disturbs the surrounding surface. A tooled or cast fake mark sits oddly, too shallow or too uniform.
4. Compare to reference images of the specific countermark type before you assume it is legitimate.
5. For anything valuable, get it certified. NGC or PCGS will authenticate, grade, and attribute the countermark, and encapsulate it. That certification is the difference between selling at full value and being haggled down over doubt.

Where to sell it (for USD)

You want a buyer who understands colonial copper and countermarks, not a generic gold-and-silver desk that pays melt.

• Specialist auction houses. Firms like Heritage Auctions and Stack's Bowers handle Mexican colonial material and reach the collectors who pay real prices. Best route for a genuinely good, certified example.
• Certified first. Send it to NGC or PCGS before selling anything you think is worth more than a couple hundred dollars. Certification widens your buyer pool and defends your price.
• Verified dealers. Use a verified numismatic dealer rather than a pawn shop. A dealer who knows the series will value the countermark correctly.
• Collector-to-collector. The Pesoteca buy-and-sell forum connects you directly with people who actually want this type, often at better net prices than a quick flip.

Before you list it anywhere, photograph the obverse, reverse, and edge in good light, and note the exact weight. Buyers of this type will ask for all three. Do not dump it on the first social-media offer.

Related pages on Pesoteca

Compare yours against the full 8 Reales colonial series, browse the wider Colonial / Viceroyalty era, see other 8 reales types, or check other coins dated 1812.

Not sure whether your countermark is genuine or which authority stamped it? Post clear photos of the obverse, reverse, and edge in the Pesoteca forum and let collectors who specialize in colonial copper weigh in before you sell.

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

The government of New Spain in 1812 was in the hands of Francisco Javier Venegas, during the military peak of Morelos in the southern part of the colony.

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: the crowned M of Morelos, the Zongolica seal, the M.V.A., and other families documented in colonial catalogs.

The declared origin of minting is: counterstamp over a previously struck piece of eight. Counterstamps and countermarks were applied with the official punch of the authority that ordered them, without a personal assayer signature: the political mark replaced individual fineness certification.

The Krause catalog references this piece under KM#265.4, useful for cross-checking the entry against international auction listings.

The year the Constitution of Cadiz was promulgated, which temporarily reformed the political framework of the Spanish empire.