8 Reales Felipe III 1609 (Mexico City Mint): Value Guide

If you inherited or found an 8 Reales coin dated 1609, you may be holding one of the earliest silver pieces struck in the Americas. Genuine examples from the Mexico City mint under Felipe III typically sell for a few hundred to several thousand US dollars depending on how well the design survived. The catch: many circulating pieces are modern replicas or worn cobs worth far less than sellers claim.

This is a Spanish colonial "cob" (in Spanish, macuquina), a hand-struck silver coin cut from a bar and stamped, so no two are exactly alike. The 8 Reales denomination is the original "piece of eight," the coin that later inspired the US dollar. That history is real, but it does not automatically make your coin valuable. Value comes down to authenticity, how much of the design is visible, and grade.

What you actually have

An 8 Reales dated 1609 was struck in silver at the Casa de Moneda de México (the Mexico City Mint) during the reign of Felipe III of Spain, assayer A. These are the real specs a genuine piece should match:

• Metal: silver, .900 fine (90 percent silver)
• Weight: 27.4 grams
• Diameter: 38 millimeters
• Edge: plain, unmilled
• Type: hand-struck cob (irregular shape is normal and expected)

Because cobs were made by hand, an irregular, slightly off-round shape is correct and does not lower the value. What matters is that the weight and silver content check out and that the design elements (the Habsburg shield, the cross, the mint mark and assayer letter) are genuine, not cast.

What it's worth in 2026

There is no single price. Early colonial cobs are graded on how complete and sharp the design is, since most saw heavy circulation. Here is the honest range for a genuine 1609 Mexico City 8 Reales.

Condition	What you see	Approx. value (USD)
Low grade / heavily worn	Shape present, design mostly flat or corroded	150 to 400
Mid grade	Shield and cross readable, some detail	500 to 1,200
High grade / clear strike	Full legible date, mint mark, assayer, strong detail	2,000 to 5,000+
Certified salvage (shipwreck provenance)	Documented recovery, often with pedigree	Varies widely, premium possible

Silver content sets a floor. At 27.4 grams of .900 silver, the metal alone is worth roughly 20 to 25 US dollars at typical spot prices. No genuine early cob should ever sell for melt value only, so if someone offers you just the silver weight, they are underpaying you badly.

Why some sell for thousands and most don't

The pieces that command real money share three traits: a clear, readable date and mint mark, strong original detail, and third-party certification from NGC or PCGS. A well-struck, certified early Mexico cob is a genuinely scarce object because most surviving examples are worn nearly smooth or come from shipwreck salvage with corroded surfaces.

The official mintage for this specific 1609 issue is not documented, which is common for hand-struck colonial coinage. Anyone quoting you an exact production number for a 1609 cob is guessing. Rarity here is judged by how many quality examples actually survive and appear at auction, not by a printed mintage figure.

The trap: fakes are everywhere

Cob 8 Reales are among the most heavily faked coins on the market. Cast copies, modern replicas, and "tourist" reproductions flood online marketplaces. Before you get excited, run these checks:

1. Weigh it. A genuine piece is close to 27.4 grams. Cast fakes are often too light or too heavy.
2. Measure it. Diameter should be near 38 millimeters.
3. The ring test. Real silver, balanced on a fingertip and tapped, gives a high, sustained ring. Base-metal fakes sound dull and short.
4. Look at the surfaces. Cast copies show a grainy, pitted texture and often a visible seam on the edge. A struck coin has crisp, pressed detail.

None of these is proof on its own. For any piece you think might be worth more than a few hundred dollars, submit it to NGC or PCGS. Certification is the only thing that settles authenticity and grade, and it is what serious buyers pay premiums for.

How to sell it (and get a fair price)

Don't dump it to the first person who makes an offer. Steps that protect you:

• Photograph it well: obverse, reverse, and edge, in good light.
• Record the weight on a digital gram scale and note it in your listing.
• Get it graded if it looks high quality. A certified coin sells faster and higher.
• Sell to specialists. Established coin dealers and auction houses that handle Spanish colonial material will pay closer to true value than a general online marketplace. In the US, firms like Heritage Auctions and Stack's Bowers regularly handle colonial cobs.

You can also compare notes and get eyes on your coin in the Pesoteca forum, where collectors help identify genuine pieces from replicas.

For grade reference, use the conservation grading guide, and to see where this fits historically, browse the full Colonial 8 Reales series.

Got a 1609 8 Reales sitting in a drawer? Post clear photos of both sides and the edge in the Pesoteca forum and let collectors tell you whether it's the real thing before you sell.

This piece belongs to the reign of Felipe III of Spain (1598-1621). He succeeded his father Felipe II. His government, delegated to the Duke of Lerma, coincided with the start of the so-called economic decline of the Hispanic Monarchy.

The government of New Spain in 1609 was in the hands of Luis de Velasco y Castilla, Marquis of Salinas, in his second viceregal term, succeeded that year by Fray Garcia Guerra.

The numismatic type of the piece is cob (macuquina), also called hammer-cut coin. The planchets were clipped with shears from a silver bar and struck between hand-held dies, so no cob has a milled edge or a perfectly circular shape. It circulated as the benchmark trade coin throughout the Atlantic for more than two centuries.

The Mexico mint (crowned Mo mark) operated from 1535 as the first mint in the Americas. During the 17th century it struck cobs almost without interruption, being the main issuing point for struck silver of the Spanish empire. The assayer's initials declared on the piece are A, an official of the Royal Treasury charged with certifying the silver fineness (0.930 and later 0.903) according to the viceregal standard.

The colonial catalogs track this piece within the families of the Mexican piece of eight, with prices that respond to rarity by year and assayer signature.

Year in which Fray Garcia Guerra was beginning his duties of government after the retirement of Viceroy Velasco.