1 oz Gold Libertad 2013 Proof

If you inherited or found a 2013 Gold Libertad proof, here is the fast answer: this is a one-ounce pure gold coin, so it never drops below the value of its gold, and the 2013 proof is genuinely scarce with only 400 pieces struck. That low mintage adds a collector premium on top of the melt value.

The Onza Libertad (Spanish for "Liberty Ounce") is Mexico's official bullion and collector coin, produced by the Banco de México (Banxico) and struck at the Casa de Moneda de México, the oldest mint in the Americas. The gold version has been issued since 1981. A "proof" finish means mirror-like fields with frosted, sculpted designs, made specifically for collectors, not for circulation.

What the 2013 Gold Libertad Proof is worth in 2026

Because this coin contains a full troy ounce of pure gold, its floor value tracks the live gold spot price. As of 2026, one ounce of gold trades in the low-to-mid thousands of dollars, so the melt value alone puts this coin well into four figures.

On top of melt, the 2013 proof carries a rarity premium for two reasons: the proof finish and the tiny 400-coin mintage. Standard bullion Libertads are minted in the tens of thousands or more; a 400-piece proof run is a different category. Expect the coin to sell above spot, with the premium widening for pieces still in their original Banxico presentation case with certificate, and for examples graded high by NGC or PCGS.

Specifications

Feature	Detail
Metal	Gold, .999 fine (99.9% pure)
Weight	31.1 grams (1 troy ounce)
Diameter	34.5 mm
Edge	Reeded
Finish	Proof
Mintage	400 pieces
Obverse	Winged Victory ("Libertad"), proof

Value by condition

Condition	What it means	Value guide
Ungraded, no case	Loose coin, some handling	Gold spot value plus a modest premium
Original Banxico case + certificate	Complete as issued	Spot plus a stronger collector premium
Graded PF69 / PF70 (NGC/PCGS)	Certified near-perfect proof	Highest premium over spot

We do not publish a single fixed dollar figure here because the gold spot price moves daily and directly sets the base value. To price yours, check the current gold spot, then add the collector premium based on your coin's condition and whether it is complete with its case and certificate.

The myth to avoid

A lot of listings online treat any "old" or "rare" Mexican coin as a lottery ticket. This coin is valuable for a concrete, verifiable reason: it holds an ounce of pure gold and only 400 exist. It is not a mystery windfall. Don't overpay chasing an inflated "one of a kind" story, and don't undersell it to a buyer who only wants to pay bullion melt when the low mintage justifies more.

How to tell if yours is genuine

Gold coins are counterfeited, so verify before you buy or sell:

• Weigh it. It should read very close to 31.1 grams on a jewelry scale. Fakes are almost always off.
• Measure the diameter. It should be 34.5 mm with a caliper.
• Check the edge. It is reeded (fine vertical grooves).
• Inspect the finish. A real proof has clean mirror fields and sharply frosted design. Flat, dull, or grainy relief is a red flag.
• Be suspicious of any deal priced below the current gold melt value. No one sells a real ounce of gold for less than the gold is worth.

For a certain answer, have it authenticated and graded by NGC or PCGS. Compare against our coin condition grading guide to gauge your coin before you send it in.

Where to sell it

Because this is a precious metal coin, sell where the buyer will show you the piece, weigh it in front of you, and pay based on real specs:

• A verified coin dealer from the Pesoteca shop directory can appraise and buy it on the spot.
• The Pesoteca buy/sell forum connects you directly with collectors, who often pay the rarity premium a bullion buyer won't.

Before selling, photograph the obverse, reverse, and edge, note whether you have the original case and certificate, and check the current gold spot so no one lowballs you. See more issues in the full Onza Libertad series.

This piece is a 1 oz gold Onza Libertad struck in 2013 in a Proof finish. The series was created by DOF decree of April 8, 1981, and added the 1/2, 1/4, 1/10 and 1/20 fractions from 1991.

Enrique Peña Nieto (2012-2018). Energy reform in December. Gold spot closed at 1,204 dollars per ounce (-28 percent for the year) and the FIX at 13.08 pesos.

Fraction: pure gold 31.103 grams, 0.999 fineness, total weight 34.55 grams, 34.5 millimeter diameter. The full ounce concentrates 31.103 grams of pure gold and is the natural reference when building a serious position. Premium over spot of 3 to 6 percent at Banxico Direct depending on the cycle.

Proof: frosted mirror fields over matte relief, polished dies and multiple strikes. It comes encapsulated with an individual certificate. The Proof run is always a fraction of the regular, typically +40 to 100 percent over bullion.

Banxico CM10 (consulted 2026-05-27) records 472 pieces against 3,428 pieces in the regular version of the same year. The difference explains the price gap between variants.

The Proof is hunted for a complete set of fractions and for the certificate with the original capsule. When buying par-to-par, check the capsule for scratches, the certificate tied to the piece, and compare the premium against the regular of the same year before dealing with a broker.