1823 Mexican 8 Reales (Octaval Eagle): Value & How to Sell

If you inherited or found an 1823 Mexican 8 Reales with an eagle on one side, here is the honest answer first: most circulated examples trade for a modest premium over their silver content, roughly 30 to 60 USD in worn condition, while sharp, certified Mint State pieces can climb into the hundreds or low thousands. This is an early republican silver crown, not a modern souvenir, so age alone does add something, but grade and authenticity decide almost everything.

The 1823 8 Reales matters because of when it was struck. That year the First Mexican Empire fell and the Republic was born. This is the transitional coinage of a brand-new country. The variety you likely have is the Octaval type, which shows the republican eagle in profile with a cord (a snake) in its beak. That design distinguishes it from the later "Resplandor" (radiant or hookneck) eagle types collectors chase separately.

What you actually have

Here are the exact specs. If your coin does not match these, treat it with suspicion.

Feature	Specification
Denomination	8 Reales
Year	1823 (single year for this type)
Metal	Silver, .900 fine
Weight	27.02 grams
Diameter	35 mm
Edge	Reeded (grooved)
Mint	Mexico City (Casa de Moneda de México)
Assayer	JM

The silver alone gives this coin a hard floor. At .900 fineness and 27.02 grams, it contains roughly 0.782 troy ounces of pure silver. Whatever the collector market does, a genuine example is never worth less than its melt value. That is the safety net under any early Mexican silver crown.

How much is it worth in 2026?

Value splits into three tiers, and the gap between them is large.

#1. Worn, circulated examples. Coins with heavy wear, scratches, or old cleaning trade close to melt with a small numismatic premium. Expect something in the range of 30 to 80 USD depending on how the silver market sits and how bad the wear is. These are common enough that condition, not rarity, sets the price.

#2. Lightly circulated to About Uncirculated. A coin with clear detail, honest surfaces, and no cleaning jumps into the low hundreds. Roughly 100 to 400 USD is realistic for a genuine, problem-free piece in this range.

#3. Mint State, certified. This is where real money appears. A high-grade 1823 8 Reales graded MS-63 or better by NGC or PCGS can bring several hundred to a few thousand USD, and top-population examples of early republican crowns have sold well above that at major auctions. The 1823 first-year issues carry extra demand precisely because they mark the birth of the Republic.

One warning: cleaning kills value. An old coin polished with silver dip or a cloth can lose half its worth or more. If your coin has an unnatural bright shine and hairline scratches under a light, that is why.

The mintage nobody can confirm

You will see forum posts quoting specific mintage figures for the 1823 8 Reales. Treat them with caution. The exact production numbers for this transitional issue are not cleanly documented, and much of what circulates online is estimate presented as fact. What is verifiable is that the design is a single-year type, so there are no year-to-year varieties within it. Die varieties (letter positions, minor cutting differences) do exist, but only NGC, PCGS, or a specialist will separate them, and only some of those command a premium.

The myth to ignore

A lot of sellers online will tell you an 1823 coin is automatically "worth thousands" because it is nearly 200 years old. It is not. Age is not rarity. Millions of 8 Reales were struck across the era, and this specific type turns up regularly at coin shows and auctions. The coins that break records are the ones in exceptional preservation or with a confirmed scarce variety. A worn common example is a nice piece of history worth a modest sum, and that is the honest figure.

How to tell if yours is genuine

Counterfeits of early Mexican silver exist, so verify before you celebrate or sell.

1. Weigh and measure it. A genuine coin is 27.02 grams and 35 mm. A cheap scale from a kitchen drawer is enough to catch an obvious fake. Off weight means walk away.
2. Check the edge. It should have clean, even reeding (grooves). Cast fakes often show a seam or mushy edges.
3. Do the ping test. Balance the coin on a fingertip and tap it gently. Genuine .900 silver rings with a clear, high, sustained tone. A dull, short thud suggests base metal.
4. Get it certified for anything valuable. If your coin looks high grade or you plan to sell above a few hundred USD, submit it to NGC or PCGS. A certified holder settles authenticity and grade, and it typically raises what a buyer will pay.

Where to sell it

Your options, ranked by safety:

• A reputable coin dealer. They value it on the spot and pay fair market for genuine pieces. For anything you think is worth real money, this is worth the trip.
• Major auction houses (Heritage, Stack's Bowers) for certified high-grade or scarce examples. This is where record prices happen, but it only makes sense for genuinely valuable coins.
• Collector communities and the Pesoteca buy-and-sell forum, where you deal with people who actually know the series.
• Online marketplaces for common circulated pieces. Fine for a 40 USD coin, riskier for anything better, and this is where the most fakes circulate. Always photograph the front, back, and edge, and list the exact weight.

Before you sell, photograph the obverse, reverse, and edge in good light, and check the value range above so you are not lowballed by the first buyer.

This coin belongs to the 8 Reales colonial and republican series, part of the early Mexican Republic era. You can also browse other 8 Reales types and other coins dated 1823.

Got an 1823 8 Reales in hand and not sure which eagle type it is or what grade it deserves? Post clear photos of both sides and the edge in the Pesoteca forum and let collectors who know the series weigh in before you sell.

This piece belongs to the transitional period between Iturbide's First Empire and the First Mexican Federal Republic, with the government in the hands of the Constituent Congress that would draft the Constitution of 1824.

The government of independent Mexico in 1823 was in the hands of the Constituent Congress, following the fall of the First Empire in March 1823, marking the start of the First Federal Republic.

The piece belongs to the early federal strikes (1823-1824) known as 8 reales octaval because of the octagonal shape of the republican eagle on the reverse, without a crown. They were issued after the fall of Iturbide and anticipate the definitive design of the peso of the Republic of the Mexican Federation.

The Mexico City mint had been striking cob coinage almost without interruption since the 16th century. The last years before the pillar reform of 1732 saw an increase in the volume of registered silver, driven by European demand and by the mines of Zacatecas and Guanajuato. The assayer's initials declared on the piece are JM, an official of the Royal Treasury charged with certifying the silver fineness (0.930 and later 0.903) according to viceregal standards.

The Krause catalog references this piece under KM#A376.2, useful for cross-checking the listing against international auction records.

The year of the fall of the First Mexican Empire in March and the proclamation of the Federal Republic.