MX · gold · 1981–date

Mexico gold Onza / Libertad 1 oz melt value

One coin holds 0.99900 oz of pure gold (AGW = actual gold weight). At today’s gold price of $4,426.50 per troy oz, melt is $4,422.07.

Gold spot

$4,426.50 / troy oz

Spot as of Sep 7, 2026 11:10 PM · $1 move in gold changes this coin by $0.9990

Silver

$66.57

Platinum

$1,820.00

Palladium

$1,378.00

What this coin is

Mexico gold Libertad / onza, 1 oz .999 gold. UNA ONZA ORO PURO.

What is written on the coin

UNA ONZA ORO PURO. Not a 50 pesos Centenario (.900 gold, 1.205 oz).

Metal content (the melt spec)

Mint specification: 31.1030 grams at 99.9% fine, which is 0.99900 troy oz of pure gold (AGW). Formula: grams × fineness ÷ 31.1034768. Date and mintmark do not change that number. Melt today is $4,422.07 per coin at $4,426.50 gold.

Mintage

Bullion dates from 1981. Premiums follow the Libertad gold market.

A little history

Modern 24-karat onza, separate from the .900 peso gold set.

How to tell you have this type

1 oz fine gold, Libertad design. Centenario is .900 and heavier in gold ounces but different alloy and look.

Date and mintmark do not change the metal on this page. Collector value is a different market — a shop looks at date, mint, and condition. Melt is the floor.

Melt / coin$4,422.07

Gold spot$4,426.50

AGW0.99900 oz

Gross weight31.103 g

Fineness99.9%

Gross troy oz1.0000

Coins / oz1.00

Figure yours

How many coins

Count the pieces. A roll of this type varies.

Pure oz 9.9900

Melt $44,220.74

If a buyer pays a percent of melt

Payout 70%

$30,954.49 at 70% of melt

Starts at 70% — a common shop bid on generic metal. Not a quote. Drag or tap a percent to sanity-check an offer.

Open stack

If you want to sell Find a shop near you

A local coin shop can make an offer. Melt is the metal floor, not a quote. Many shops buy generic gold and silver as a percent of that number.

Before you sell

Bullion premium over melt

Compare the melt on this page with a live bid on the same product. Proofs and special finishes often bring more than bullion.

Melt is the metal floor. A shop looks at date, mint, and condition. We list 401 types and ~10,200 melt values.

Quick amounts

Using $4,426.50 gold.

You have	Pure oz	Melt
1 coin	0.9990	$4,422.07
10 coins	9.9900	$44,220.74
20 coins	19.9800	$88,441.47

Gold chart

Where gold has been.

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Melt alert

Email me if this coin’s melt crosses a number I set.

Questions people ask

How much pure gold is in a Mexico gold Onza / Libertad 1 oz?

Mint spec is 31.103 grams at 99.9% fine, which is 0.99900 troy oz of pure gold (AGW). Date and mintmark do not change that.

What is a Mexico gold Onza / Libertad 1 oz worth in melt today?

At gold spot of $4,426.50 per troy oz, one coin’s melt is $4,422.07. Multiply by how many you have. A rare date or a nice grade can sell for more than melt.

How many Mexico gold Onza / Libertad 1 ozs equal one ounce of gold?

About 1.00 coins equal 1.00 troy oz of pure gold at mint weight.

Does mintmark change the melt value?

No. Mintmark and date do not change the metal for this composition. A Mexico City (Mo) piece and another mint of the same spec have the same melt. Collector premiums still follow date, mint, and grade.

Is melt what I should sell this Mexico gold Onza / Libertad 1 oz for?

Dealers usually pay a premium over melt for recognized bullion, and sell it above spot. Melt is the floor, not the typical ticket. Compare the melt on this page with a live bid on the same product. Proofs and special finishes often bring more than bullion.

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