8 Reales Silver 1822: Iturbide's First Empire Coin Value

If you inherited an 1822 Mexican 8 Reales with a bust and the name Agustín I, you have one of the more collectible early Mexican silver coins, not a common circulation piece. In average condition it typically trades from roughly 150 to 400 USD, and sharp, high-grade examples have brought several thousand USD at auction in 2026. The reason is a short one-year emperor and real silver content.

Quick answer: what it's worth

This coin was struck for a single, brief chapter of Mexican history, the First Empire (Primer Imperio) of Agustín de Iturbide, who crowned himself emperor in 1822 and was gone by early 1823. That short window is what gives the coin its collector demand. It is genuine silver, so it also has a floor value tied to metal.

• Worn but genuine: roughly 150 to 350 USD
• Clearly circulated, decent detail: roughly 350 to 800 USD
• Uncirculated / high grade (certified): 1,500 to 4,000+ USD depending on the type and eye appeal

Exact prices swing hard by grade and by which bust variety you have, so read the authenticity and grading notes below before you sell anything.

What you actually have

The 8 Reales was the world's silver trade coin for centuries, the famous "piece of eight," and the Mexico City mint (ceca de México) was its biggest producer. Your 1822 piece is one of the first coins struck by an independent Mexico rather than by Spain.

Technical facts (verify yours against these)

Feature	Detail
Denomination	8 Reales
Year	1822
Mint	Mexico City
Assayer initials	JM (the official who certified the silver purity)
Metal	Silver, 0.900 fine
Weight	26.79 g
Diameter	37 mm
Edge	Incuse (design pressed into the edge)
Catalog reference	KM#305

The assayer initials (JM here) are the mark of the mint official who guaranteed the fineness of the silver. On colonial and early imperial coins these initials, along with the mint mark, are part of what a specialist checks to confirm the coin is real and correctly attributed.

Why this one commands a premium

Most old Mexican coins are worth a few dollars over their metal, and "old" alone means almost nothing. The 1822 8 Reales is different for concrete reasons:

1. A one-year emperor. Iturbide's empire lasted under a year. Coins tied to that short period were produced in limited windows, which keeps supply tight.
2. Real silver. At 26.79 g of 0.900 fine silver, the coin holds close to three-quarters of an ounce of pure silver. That sets a hard bullion floor no matter the grade.
3. Historical bridge. It marks Mexico's transition from Spanish colony to independent nation, a category collectors actively chase.

Even so, do not expect a life-changing number from a worn example. The four-figure prices belong to high-grade, professionally certified coins with strong strike and clean surfaces.

The myth to ignore

There is a persistent claim online that any 1822 Mexican coin is "worth millions." It is not. A genuine, average-condition 8 Reales from 1822 is a few hundred dollars. Fantasy prices usually come from listings that never sell, or from confusing this silver coin with rare gold pieces of the same era. Price your coin off completed sales and certified examples, not off asking prices.

How to tell if yours is genuine

Colonial and imperial Mexican silver is heavily faked, so run these checks before you value it:

• Weigh it. Use a jewelry scale. A genuine piece should be very close to 26.79 g. A coin far off that weight is a warning sign.
• Measure it. Diameter should be about 37 mm.
• Check the edge. It should show the incuse (pressed-in) edge design, not a plain or reeded modern-style edge.
• Look at the mint mark and assayer initials (JM). Style and placement matter; a specialist can spot a wrong die style quickly.
• Be suspicious of any offer well below silver value. If someone lowballs you under melt, they either doubt the coin or hope you don't know what it holds.

For anything you plan to sell for real money, third-party grading and authentication (NGC or PCGS) is worth it. A certified coin sells faster and higher because the buyer isn't guessing.

Where to sell it

• A verified numismatic dealer from the Pesoteca shop directory will appraise it on the spot and pay you based on grade and silver content.
• The Pesoteca buy-and-sell forum puts you in front of collectors who pay real collector prices rather than scrap prices.
• Photograph the obverse, reverse, and edge in good light before listing. Compare against the specs table above.

Avoid dumping it to the first buyer on a social feed. A genuine 1822 8 Reales is worth a careful appraisal.

Got an 1822 8 Reales in hand and not sure of the grade or the assayer mark? Post clear photos of both sides and the edge in the Pesoteca forum and let collectors weigh in before you sell.