$66.05 / troy oz
Spot as of Sep 6, 2026 10:35 PM · $1 move in silver changes this coin by $1.00
PhotoNot on file yet — specs below are mint weight.
Melt / coin$65.98
Silver spot$66.05
ASW0.99900 oz
Gross weight31.103 g
Fineness99.9%
Gross troy oz1.0000
Coins / oz1.00
What this coin is
The Libertad is Mexico’s 1 oz silver bullion coin (UNA ONZA PLATA PURA). 31.103 g, .999 fine, 1.00 oz ASW. Winged Victory, like the gold Centenario’s angel.
What is written on the coin
UNA ONZA PLATA PURA, 1 ONZA, Ley 999, Mexico. Not a peso denomination.
Metal content (the melt spec)
Mint specification: 31.1030 grams at 99.9% fine, which is 0.99900 troy oz of pure silver (ASW). Formula: grams × fineness ÷ 31.1034768. Date and mintmark do not change that number. Melt today is $65.98 per coin at $66.05 silver.
Mintage
Annual bullion and proof mintages from 1982. Year and finish (bullion vs proof) change the premium. Melt is one ounce of silver.
A little history
Modern bullion from Casa de Moneda, parallel to the Maple and Silver Eagle.
How to tell you have this type
Onza / Libertad, not UN PESO. One ounce, not 0.72 peso silver.
Date and mintmark do not change the metal on this page. Collector value is a different market — see Sold Comps for sold prices.
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. For auction and eBay solds on the same type, see Sold Comps. We list 355 melt values; collector premiums are a different market.
Quick amounts
Using $66.05 silver.
| You have | Pure oz | Melt |
|---|---|---|
| 1 coin | 0.9990 | $65.98 |
| 10 coins | 9.9900 | $659.84 |
| 20 coins | 19.9800 | $1,319.68 |
Silver chart
Where silver has been.
Melt alert
Email me if this coin’s melt crosses a number I set.
Related types
Same metal, nearby coins.
Mexico 8 reales (OCHO REALES)
1824–1897 · 0.78590 ASW
$51.91
Mexico Caballito peso (UN PESO)
1910–1914 · 0.78590 ASW
$51.91
Mexico peso 0.720 (UN PESO)
1920–1945 · 0.38565 ASW
$25.47
Mexico peso Morelos 0.500 (UN PESO)
1947–1949 · 0.22506 ASW
$14.87
Mexico 2 pesos 1921 (DOS PESOS)
1921 · 0.77170 ASW
$50.97
Mexico 5 pesos Cuauhtémoc (CINCO PESOS)
1947–1948 · 0.86810 ASW
$57.34
Mexico 5 pesos Hidalgo 0.720 (CINCO PESOS)
1951–1954 · 0.64310 ASW
$42.48
Mexico 10 pesos Hidalgo silver (DIEZ PESOS)
1955–1960 · 0.83570 ASW
$55.20
Questions people ask
How much pure silver is in a Mexico Libertad 1 oz silver?
Mint spec is 31.103 grams at 99.9% fine, which is 0.99900 troy oz of pure silver (ASW). Date and mintmark do not change that.
What is a Mexico Libertad 1 oz silver worth in melt today?
At silver spot of $66.05 per troy oz, one coin’s melt is $65.98. Multiply by how many you have. A rare date or a nice grade can sell for more than melt.
How many Mexico Libertad 1 oz silvers equal one ounce of silver?
About 1.00 coins equal 1.00 troy oz of pure silver 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 Libertad 1 oz silver 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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