8 Escudos Felipe V 1720 (Mexico City Gold Cob-Era Onza)

If you inherited a heavy gold coin dated 1720 with a Spanish king's name on it, you are holding a Mexican 8 escudos of Felipe V, and it is worth real money. The floor is its gold content, roughly 0.7621 troy ounces of pure gold, worth well over USD 1,700 at current metal prices. Genuine, well-preserved examples sell for far more.

This is not a common pocket-change coin. The 8 escudos was the largest gold denomination of the Spanish colonial system, struck in Mexico City when it was the main mint of the Spanish Empire. Collectors call it an "onza" (ounce). Yours carries the date 1720, the assayer initial J, and the Mexico City mint mark. The catalog reference is KM#57.2.

What it's worth in 2026

Value splits into two parts: the gold in the coin, and the collector premium on top.

Metal floor. The coin weighs 27.07 grams at .875 fineness (21 karat gold). That is about 23.68 grams, or 0.7621 troy ounces, of pure gold. At current spot prices that alone puts the melt value comfortably above USD 1,700. No genuine example of this coin is worth less than its gold content, so treat that as the absolute minimum.

Collector premium. Early Felipe V 8 escudos are scarce, and condition drives everything. A worn, damaged, or repaired piece may trade close to melt. A sharp, original example with clear detail can bring several thousand dollars at auction. Top-grade certified pieces of early Bourbon Mexican gold have sold in the five-figure range at Heritage and Stack's Bowers.

One detail matters for your specific coin: the source describes an overdate, 20 over 19 (the die was re-punched from 1719 to 1720), and an anverso repintado, meaning the obverse shows signs of retooling or repair. A repaired or retooled surface lowers the collector premium significantly and can push the coin back toward its gold value. Have that verified before you accept any high number.

Coin	Year	Mint	What drives value	Realistic USD range
8 Escudos Felipe V (KM#57.2)	1720	Mexico City (assayer J)	Gold content + grade	Melt (about USD 1,700+) to several thousand for a clean original

The range is wide on purpose. A gold coin from 1720 that has been cleaned, mounted in jewelry, or retooled behaves like bullion. A crisp, untouched, certified example behaves like a rare collectible. The difference is thousands of dollars, and only the coin in hand tells you which one you have.

Quick specs

• Metal: Gold, .875 fine (21K)
• Weight: 27.07 g
• Diameter: 30 mm
• Edge: Plain (no reeding)
• Mint: Mexico City
• Assayer: J
• Catalog: KM#57.2
• Note on this date: overdate 20/19; obverse reported retooled

Is it rare?

Rare enough to matter. These early Bourbon 8 escudos were struck in limited numbers and most that survived have wear or damage. A high-grade, problem-free 1720 with a genuine surface is genuinely scarce and desirable. But scarcity only pays off in top condition. A common-grade or repaired piece is valued mostly on its gold, not its rarity.

How to tell if it's genuine

Because this coin is solid gold, fakes and "replicas" are everywhere. Run these checks before you buy or sell:

1. Weigh it. Use a jeweler's scale. It should read very close to 27.07 g. A light coin is a red flag; a wrong-alloy fake often reads high or low.
2. Measure it. Diameter should be about 30 mm on a jeweler's caliper.
3. Check the edge. It should be plain, with no reeding.
4. Study the engraving. Look at the mint mark, the assayer initial J, and the overall style. Cast counterfeits show soft, mushy detail and sometimes seams on the edge.
5. Be suspicious of any offer far below gold value. Nobody sells real gold for less than the metal is worth.

For a coin at this value, get it authenticated by a third-party grading service such as NGC or PCGS before any sale. Certification protects you from both fakes and lowball offers.

Where to sell it

Do not dump a gold coin on the first Facebook buyer. Your safer options:

• A verified numismatic dealer from the Pesoteca shop directory, who can value it on the spot and pay near true market.
• The Pesoteca buy-and-sell forum, where collectors and specialists in colonial gold trade directly.

Photograph the obverse, reverse, and edge in good light before you talk to anyone. For colonial gold, always deal with someone who will let you inspect the piece, weigh it, and verify it before money changes hands. If you want a second opinion on the overdate or the reported retooling, post clear photos on the Pesoteca forum and let the community weigh in.

Have a 1720 8 escudos or another Felipe V gold piece in your inheritance? Share the weight and photos on the forum and we'll help you figure out whether it's a bullion coin or a five-figure rarity.