8 Escudos Gold Coin, Carlos IV 1789: Value & Real Prices

If you have an 8 escudos gold coin dated 1789 with Carlos IV on it, you are holding close to a full ounce of gold, and a genuine one starts around its melt value and climbs into the thousands of dollars depending on grade. This is real money, not a common pocket piece. Here is what it actually is, what drives the price, and how to avoid getting cheated.

What you actually have

The 8 escudos was the largest gold denomination struck in colonial Mexico, then called the Viceroyalty of New Spain. Collectors and old traders called it the "onza de oro" (gold ounce). The 1789 date marks the first year of the reign of Carlos IV (Charles IV of Spain), which makes it a first-year type that draws extra collector interest.

Hard specs, verify yours against these:

• Metal: gold, 0.875 fine (21 karat)
• Weight: 27.03 grams
• Diameter: 38 mm
• Edge: diagonally reeded
• Denomination: 8 escudos
• Ruler: Carlos IV, first year (1789)

At 27.03 grams of 0.875 gold, the coin contains roughly 23.6 grams (about 0.76 troy ounces) of pure gold. That gives it a hard floor: even a worn, damaged, or common example is worth its gold content, which at recent gold prices runs well over 1,500 USD in pure melt value alone. No genuine 8 escudos is "worth a few dollars."

What drives the price

Four things set the number for these coins:

1. Date and reign year. 1789 as a first-year issue is more sought after than a middle-of-the-reign date.
2. Mint (ceca). Colonial Mexico had gold minting at Mexico City. The mint mark and the assayer's initials on the coin identify who struck and certified it, and some combinations are far scarcer than others.
3. Assayer. The initials next to the value tell you which assayer signed off. Certain assayer/date pairs are rare and command premiums.
4. Condition (grade). This is the biggest swing. A cleaned or scratched coin sells near melt. A sharp, original-surface example graded by a major service sells for a large multiple of melt.

Real value ranges

Because exact prices depend on the mint mark, assayer, and grade of your specific coin, here is an honest range rather than a fake single figure. Prices are in USD.

For the top end, condition-census examples of Carlos IV 8 escudos have sold at Heritage Auctions and Stack's Bowers in the mid four figures and above, with scarcer mint/assayer combinations pushing higher. If your coin is a common Mexico City date in average shape, expect the lower rows. Do not assume the record-price headline applies to yours.

The myth to kill

Some sites claim any old Spanish colonial gold coin is worth "a fortune" or "millions." That is clickbait. The 8 escudos was a real, widely used trade coin, not a one-off rarity. Its value is anchored to gold content plus a numismatic premium for date, grade, and scarcity. A genuine example is genuinely valuable, but it is measured in the low thousands for typical pieces, not millions.

Watch out: fakes are everywhere

Because this coin is nearly an ounce of gold, it is heavily counterfeited, including cast copies and gold-plated base-metal fakes. Before you buy or sell, check the basics:

• Weigh it on a jeweler's scale. It must be very close to 27.03 grams. A light coin is a red flag.
• Measure it with calipers. Diameter should be about 38 mm.
• Check the edge. It should show diagonal reeding, not a smooth or seam-marked edge.
• Study the engraving, mint mark, and assayer initials against reference images. Fakes often have soft, mushy lettering.
• Be suspicious of any offer priced well below the gold value. Nobody sells real gold at a loss by accident.

For anything this valuable, get it authenticated and graded by NGC or PCGS. A certified holder both proves it is real and raises what buyers will pay.

How to check what yours is worth

1. Photograph the front (anverso), back (reverso), and edge in good light.
2. Confirm weight and diameter against the specs above.
3. Read off the mint mark, date, and assayer initials.
4. Compare against recent sold auction results for that exact combination, not asking prices.
5. If it passes, consider third-party grading before selling.

You can also read our guide to Mexican silver and gold coin values and our overview of how coin grading affects price to place your coin in context.

Where to sell (and where not to)

For a coin worth this much, protect yourself. Safer routes:

• A verified dealer from the Pesoteca shop directory, who can value it on the spot.
• The Pesoteca buy-and-sell forum, where collectors deal with each other.

Because it is a precious-metal coin, only deal with someone who will let you verify the piece and its weight before money changes hands. Avoid dumping it to the first bidder on social media, and skip anyone offering below the gold value.

Have an 8 escudos or another colonial gold coin you can't identify? Post clear photos of the front, back, and edge in the Pesoteca forum and let the community read the mint mark and assayer for you before you sell.

Eight escudos Carlos IV, 1789, Mexico City mint. The record describes the piece as first type with the bust of Carlos III and the legend Carol IV, a documented iconographic variant of the first year of the reign in which the obverse die still showed the portrait of the deceased king while the legend already recognized the successor. Carlos IV inherited the throne on December 14, 1788 after the death of Carlos III and was formally crowned on January 17, 1789. The practice of the earlier bust with an updated legend was transitional while the dies with the new king's own portrait arrived in Mexico. In New Spain, Manuel Antonio Florez was governing, viceroy from 1787 to 1789, in the last year of his tenure before the arrival of the second Count of Revillagigedo in October. The ounce weighs 27.06 grams with a fineness of 0.875, already under the new Bourbon standard introduced in 1772 with the shift to the bust. In France the Revolution broke out in July, an event that would reorder all of Europe. 1789 pieces are collectible for the iconographic rarity of the Carlos III bust with the Carlos IV legend, a direct testimony of the change of reign.