8 Escudos Carlos III 1767 Gold Coin: Value & Price Guide

If you inherited or found an 8 Escudos coin of Carlos III dated 1767, here is the short answer: it holds 26.96 grams of gold, so even the most worn example is worth well over 1,500 USD in metal alone in 2026. Nice examples with clear detail trade for several thousand dollars, and certified high grades go much higher. This is a genuine colonial gold coin, not a common piece.

What you actually have

The 8 Escudos was the largest gold denomination of the Spanish colonial system, popularly called an "onza" (an ounce of gold). Yours was struck at the Mexico City mint, which was the main silver and gold supplier of the Spanish Empire at the time.

The technical facts that drive value:

• Metal: gold
• Weight: 26.96 grams
• Diameter: 36 mm
• Edge: chain pattern (a security feature; a smooth or plain edge on a supposed 8 Escudos is a red flag)
• Catalog reference: KM#155
• Type: third type, mature bust, without the "8 S" denomination marking
• Assayer initials: MF (the official who certified the gold's fineness)

A colonial 8 Escudos is close to a full troy ounce of gold. That metal content sets a hard floor under the value. Even a damaged, holed, or heavily worn example will never sell for less than its gold weight, and dealers know it.

What it is worth in 2026

Value moves on two tracks: the gold content (the floor) and the collector premium (grade, eye appeal, and how the specific assayer and date fall in the market).

These are working ranges, not a guaranteed price. Two coins with the same date can differ by thousands of dollars based on strike quality, surfaces, and whether a grading service has authenticated them. For colonial gold this old, an original, uncleaned surface matters more than most people expect. Harsh cleaning to make it "shiny" lowers value.

Is it rare

Rarer than the average old coin, yes, but the word to focus on is "gold." Colonial 8 Escudos were struck in limited numbers and many were melted over the centuries, so survivors carry a real premium above their metal. That said, don't assume any single specimen is a unique treasure. The 1767 Mexico mint issue exists in collector hands; its value comes from the gold plus solid demand, not from being one of a kind.

Watch out for fakes

Because it is nearly an ounce of gold, this coin is heavily counterfeited. Fakes range from cheap gold-plated base metal to convincing struck copies. Before you buy or celebrate a find, check these:

1. Weigh it. Use a jewelry scale. It should read 26.96 grams. A light coin is not solid gold.
2. Measure it. 36 mm diameter with calipers.
3. Check the edge. The genuine coin has a chain-pattern edge. A plain or reeded edge is wrong.
4. Study the engraving, mint mark, and assayer (MF). Fakes often botch the lettering and portrait style.
5. Be suspicious of any "bargain." An 8 Escudos priced below its gold value is either fake or stolen.

For a coin at this value, professional authentication through NGC or PCGS is worth the cost. A certified holder both confirms authenticity and raises resale value.

Where to sell it

Do not dump this on Facebook Marketplace at the first offer. For a coin worth thousands in gold, sell where buyers understand what it is:

• A verified numismatic dealer from the Pesoteca shop directory, who can appraise it in person and pay fair value based on the current gold price.
• The Pesoteca buy-and-sell forum, where collectors compete for genuine colonial gold.
• A major auction house for a certified, high-grade example, where competition can push the final price well past a dealer's cash offer.

Before you sell, photograph the obverse, reverse, and edge in good light, weigh it, and compare against the value ranges above. If you want a second read on grade or authenticity, post it in the Pesoteca forum first.

Got a Carlos III 8 Escudos in a family collection? Share the weight and clear photos of both sides in the forum and let the community help you pin down the grade before you take it to market.

Eight escudos Carlos III, 1767, Mexico mint. The entry describes a third type with a mature bust without the 8S mark. A historic year: on June 25 the Pragmatic Sanction was carried out expelling the Society of Jesus from all Spanish dominions, including New Spain. The operation was coordinated by Jose de Galvez as visitor general and provoked disturbances in several cities of the Bajio, especially Guanajuato, San Luis Potosi and Patzcuaro, which were suppressed with military harshness. It was also the year Carlos Francisco de Croix took over the viceroyalty in August, succeeding the marquis of Cruillas. The ounce weighs 27.06 grams with a fineness of 0.916. Produced by mill with a round planchet, classic pillar reverse with crowned Pillars of Hercules and PLVS VLTRA. Krause KM#155 holds for this historically dense year. Pieces from 1767 are collectible for the context of the Jesuit expulsion, one of the most significant religious and political events of the 18th-century Americas, and for documenting the double viceregal transition of the year.