1/20 oz Gold Libertad 2011: What It's Worth

If you inherited or found a 2011 1/20 oz Gold Libertad, here is the short answer: it is real gold, so it always has a floor value tied to its metal content, and this particular date is scarce, only 2,224 were struck. That combination puts a genuine example well above its tiny gold weight, especially in top grade.

The Libertad is Mexico's official bullion and collector coin, made by the Casa de Moneda de México (the Mexican Mint). "Onza" means ounce in Spanish; this is the smallest fractional size, one-twentieth of a troy ounce of pure gold.

What it actually is

This is a fractional gold bullion coin from the Onza Libertad series, struck in 2011 with a satin finish.

Spec	Detail
Denomination	1/20 troy ounce gold
Weight	1.5552 grams
Diameter	13 mm
Metal	Gold .999 fine (99.9% pure)
Edge	Reeded
Mintage	2,224 pieces
Mint	Casa de Moneda de México

The reverse shows the Winged Victory (the Angel of Independence) in front of the Popocatépetl and Iztaccíhuatl volcanoes, with the inscription "1/20 ONZA TROY DE ORO PURO" (one-twentieth troy ounce of pure gold).

What it's worth

Two things drive the price: the gold inside it and the collector premium from the low mintage.

Metal floor. At 1.5552 grams of .999 gold, the melt value moves with the gold spot price. That floor changes daily, so check the current spot when you value it. Even at the floor, this coin is never "worth nothing."

Collector premium. With only 2,224 struck, the 2011 1/20 oz is a genuinely low-mintage date compared to more common Libertad years. A clean, uncirculated example, ideally still in its original Banxico blister pack, sells for a meaningful markup over melt. Certified coins in top grade (NGC or PCGS MS-69 or MS-70) command the strongest premiums, because collectors of fractional Libertad sets chase the scarce dates.

For a piece like this, expect the value to run from the current gold melt on a worn or loose example up to a solid multiple of melt for a certified, high-grade coin in original packaging. The exact figure depends on grade, packaging, and the gold spot at the moment of sale.

How to check what yours is worth

1. Confirm the weight and diameter. Use a jeweler's scale and a caliper. It should weigh 1.5552 grams and measure 13 mm. Fakes usually miss on weight or diameter.
2. Check the grade. Handling marks, scratches, and finger oils lower the value. Use our coin grading guide to judge condition. Never clean it; cleaning destroys value.
3. Keep the original packaging. If it's still in the sealed Banxico blister, leave it there. Original packaging adds to the price.
4. Consider certification. For a scarce, high-grade example, professional grading (NGC/PCGS) can pay for itself by confirming authenticity and locking in a grade buyers trust.

How to tell if it's genuine

Because it's precious metal, counterfeits exist. The fastest checks: weight (1.5552 g), diameter (13 mm), sharp relief on the Angel and volcanoes, and even gold color across the surface. Flat detail, wrong weight, or an off-color tone are red flags. Be suspicious of any offer priced far below the gold value; nobody sells real gold at a loss for no reason.

About "error" coins

Genuine mint errors (off-center strikes, die rotation, doubling) can raise value if they're real and verifiable. Most "errors" people spot online are post-mint damage: dings, scratches, or corrosion, not factory errors. If you think you have one, post clear photos in the forum for a second opinion before assuming it's rare.

Where to sell it

Sell to a buyer who values it in person and shows you a scale. A verified numismatic shop from the Pesoteca directory will appraise it on the spot, or you can list it in the buy-and-sell forum among collectors. Photograph the obverse, reverse, and edge, and check the value range above before you agree to anything. Don't dump it to the first buyer on social media.

Have a 2011 Libertad you're not sure about? Post your weight, grade, and photos in the Pesoteca forum and let collectors help you pin down what it's really worth.

This piece is a 1/20 oz gold Onza Libertad struck in 2011 in the regular (bullion satin) finish. The series was created by the DOF decree of April 8, 1981 and added the 1/2, 1/4, 1/10 and 1/20 fractions from 1991.

Felipe Calderon. The year of gold's historic peak (1,895 dollars in September), spot closing at 1,566 dollars per ounce and the FIX at 13.99 pesos due to the European crisis.

Fraction: pure gold 1.555 grams, .999 fineness, total weight 1.73 grams, diameter 20 millimeters. The 1/20 is the smallest fraction and the entry point into physical gold. It began to be struck in 1991. Premium over spot 15 to 25 percent, the highest in the family.

Regular (bullion satin): matte-brilliant fields and satin relief, a single press strike. Wholesale distribution for physical gold investment, the year's largest mintage and the natural premium reference against spot.

Banxico CM10 (consulted 2026-05-27) records 2,224 pieces against 287 pieces in the Proof version of the same year. The difference explains the price gap between variants.

The regular is bought for its gold content at a low premium over spot. Check the weight, diameter and reeded edge; compare the premium against Banxico Direct before accepting a middleman.