1607 Mexico 8 Reales Felipe III: Value & How to Sell

If you inherited a heavy, irregular silver coin marked with the name Felipe (Philip) and a date around 1607, you may be holding a Spanish colonial 8 reales struck in Mexico City. These are real 400-year-old pieces of silver, and depending on condition they run from a few hundred dollars to several thousand at auction. This is not a coin worth millions, but it is far from worthless.

What you actually have

The 8 reales was the standard large silver coin of Spain's American empire, the direct ancestor of the U.S. dollar (the "piece of eight"). Yours was struck under Felipe III (Philip III of Spain, reigned 1598 to 1621) at the Casa de Moneda de México, the Mexico City mint, which is the oldest mint in the Americas.

These early 1600s pieces are known as cobs (from the Spanish cabo de barra, "end of the bar"). They were hand-struck on irregular, hand-cut planchets, so no two are exactly alike. Expect crude, off-center strikes with parts of the design missing. That is normal for the type and does not mean the coin is fake or damaged.

Specifications (verify yours against these):

• Weight: 27.56 grams
• Diameter: about 40 mm
• Metal: silver, .900 fine (90 percent silver)
• Edge: plain (unmarked)
• Assayer: F (the mark of the mint official responsible for fineness)
• Date: 1607, Mexico City mint

What a 1607 8 reales is worth in 2026

Value is driven almost entirely by grade (state of preservation) and how much of the original design survived the crude striking process. A worn, heavily corroded cob with a weak strike sits near its silver value. A well-centered example with clear date, assayer mark, and full shield can bring a real premium from collectors of colonial silver.

Condition	What it looks like	Typical range (USD)
Low grade / heavily worn	Weak strike, date unclear, corrosion	150 to 400
Mid grade	Readable date and mint marks, honest wear	400 to 1,200
High grade / well-struck	Full shield, sharp date, minimal wear	1,500 to 5,000+

These are general market ranges for Mexico City cob 8 reales of the Felipe III period, not a fixed appraisal. Certified examples in strong grades (graded by NGC or PCGS) consistently sell at the top of these ranges and above. Exceptional shipwreck-recovery pieces with documentation can go higher. If your coin is genuine and legible, treat a few hundred dollars as the floor, not the ceiling.

The silver floor

Even the worst example has a hard bottom value. At 27.56 grams of .900 silver, each coin contains roughly 0.80 troy ounces of pure silver. Whatever silver spot is on the day you sell, that melt value is your floor. Collector demand for genuine dated cobs almost always keeps the coin worth more than melt, so do not sell a legible dated piece to a scrap buyer.

Is it rare?

No exact mintage figure survives for this issue, which is common for early colonial coinage. Cob 8 reales were produced in large numbers over the period, so the type itself is not rare. What is scarce is a specific date, well struck, with a clear assayer mark, in high grade. Most surviving cobs are worn, corroded, or so poorly struck that the date is gone. A 1607 with a bold, readable date is worth far more than a generic undated cob of the same king.

How to tell if yours is genuine

Fake and cast colonial cobs are common, so run these checks before you get excited or spend money.

1. Weigh it. A genuine full-weight piece is close to 27.56 grams. A coin that weighs significantly less (or is oddly light for its size) is a warning sign. Note that authentic cobs were sometimes clipped, so slightly underweight is not automatically fake.
2. Look at the surface. Struck coins show sharp, pressed detail. Cast fakes look soft, have bubbles or pitting, and often a visible seam on the edge.
3. Check the ring. Real .900 silver gives a clear, high-pitched ring when balanced on a fingertip and tapped gently. Base-metal fakes sound dull and short.
4. Do not clean it. Cleaning a colonial coin destroys value. Leave the toning and dirt alone.

For anything you believe is in decent condition, professional authentication by NGC or PCGS is the definitive step. It confirms the coin is real, assigns a grade, and roughly doubles your pool of confident buyers. Use our coin grading guide to estimate the grade first.

Where to sell it

• Specialized auction houses (such as Heritage or Stack's Bowers) are the best route for a genuine high-grade or certified cob. They reach the collectors who pay top prices for Spanish colonial silver.
• Verified numismatic dealers who know colonial coinage will appraise it on the spot. See the Pesoteca shop directory to find one by city.
• Collector marketplaces like the Pesoteca buy/sell forum let you reach buyers directly. Post clear photos of the front, back, and edge, plus the exact weight.

Avoid selling a legible dated cob to a general pawn shop or scrap-gold-and-silver counter. They pay melt at best and rarely recognize the collector premium.

Related colonial silver

This piece belongs to the broader colonial 8 reales series struck in Mexico across two centuries under different kings. If you have a small hoard, the dates, kings, and assayer marks all matter, and later milled (machine-struck) issues are valued differently from these early cobs.

Have a 1607 or another colonial cob and want a read on its grade and value? Post clear photos of both sides and the edge, with the weight, in the Pesoteca forum and the community will help you place it.

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 beginning of the so-called economic decline of the Hispanic Monarchy.

The government of New Spain in 1607 was in the hands of Luis de Velasco y Castilla, Marquis of Salinas, in his second viceregal term.

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

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

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.

A year in which the Mexican Mint was already operating from its original seat in the Plaza del Volador of the New Spanish capital.