1oz Silver Libertad 2012 Proof: Value & Prices

If you have a 2012 Proof Onza Libertad, you own one of the scarcer modern Mexican silver bullion coins: only 4,200 were struck. That low mintage puts it well above its melt value, which is the price floor set by roughly one troy ounce of pure silver. Below is what it is, why the number matters, and how to check what yours will actually sell for.

Quick answer: what it's worth

The Onza Libertad ("Liberty Ounce") is Mexico's official silver bullion coin, minted by Banco de México. "Onza" means ounce; "Libertad" refers to the Winged Victory statue on the reverse. A proof finish means mirror fields and frosted raised details, made for collectors, not circulation.

The 2012 proof is not a common date. With 4,200 pieces struck, it trades as a collector coin, not just as bullion. In original Banxico packaging and top condition, it sells for a meaningful premium over the silver price. A worn or cleaned example, or one out of its case, drops toward the metal value.

Specifications (verify yours against these)

Spec	Detail
Weight	31.1 grams (1 troy ounce)
Diameter	40 mm
Metal	Silver .999 fine
Edge	Reeded
Finish	Proof (mirror fields, frosted relief)
Mintage	4,200 pieces
Series	Onza Libertad

The .999 fineness means the coin is 99.9 percent pure silver. At current spot prices, the metal alone is worth roughly the value of one troy ounce of silver in USD, and that figure is your absolute floor. The 2012 proof normally sells above it because of the low mintage and the collector finish.

What drives the price

Three things move the value on this specific coin:

• Grade. A proof coin lives or dies on its surfaces. Mirror fields show every hairline. A flawless PF69 or PF70 (NGC or PCGS grading) commands a strong premium; a scratched or fingerprinted example does not.
• Original packaging. The Banxico capsule, box, and certificate matter to collectors. A proof loose in a flip loses part of that premium.
• Silver spot. Because it is a bullion coin, the metal price sets the floor and drags the whole range up or down over time.

Expect a range from a modest premium over melt for a handled, out-of-case coin, up to a solid multiple of melt for a certified PF70 with complete original packaging. We do not quote a single fixed number here because silver spot moves daily and grade splits the market widely.

The coin design

Obverse: the current Mexican national coat of arms (an eagle on a cactus devouring a serpent), part of the standard Onza Libertad design.

Reverse: Winged Victory (the Angel of Independence) with the volcanoes Popocatépetl and Iztaccíhuatl behind her, the design that has defined the series since its modern relaunch.

The 2012 coin belongs to the modern Nuevos Pesos era of Mexican coinage. If you have several dates, compare mintages across the Onza Libertad series, because scarcity varies year to year and that is what separates a common ounce from a coin worth many times its silver content.

How to check what yours is worth

1. Confirm it's real. Weigh it on a jewelry scale (should be 31.1 grams) and measure the diameter (40 mm). Wrong weight, wrong diameter, flat relief, or off-color fields point to a fake. Be suspicious of any offer far below the silver value.
2. Grade it honestly. Look at the mirror fields under light. Hairlines, spots, and fingerprints pull the grade and the price down. For a real premium, a coin usually needs third-party certification (NGC or PCGS). See our coin condition grading guide.
3. Check the packaging. Original Banxico capsule and certificate add value. Do not pry the coin out of a sealed capsule.
4. Price it against melt first. Know the current silver spot value of one troy ounce, then add the collector premium the 2012 date earns.

Where to sell it

To sell a 2012 Proof Silver Libertad safely, use a verified dealer from the Pesoteca shop directory, who can appraise it on the spot, or the collector buy-and-sell forum. Photograph the obverse, reverse, and edge in good light, and check the grade ranges above before you accept an offer. Do not dump it to the first buyer on social media.

Have a 2012 proof, or a full run of Libertads you inherited? Post clear photos in the Pesoteca forum and let collectors confirm the date, grade, and a fair price before you sell.

1 troy oz Libertad silver 2012 Proof

This piece is the 1 troy oz silver Libertad, minted by the Mexican Mint in 2012 in its Proof version.

Technical data. It contains 31.1 g of pure silver, .999 fineness, and measures 40 mm in diameter. The reverse bears the effigy of the Angel of Independence, adopted by Banxico as the official symbol of the series since 1981. The obverse shows the National Coat of Arms in its pre-1969 version, alongside other historical coats of arms as an identity mark of the family.

Role within the set. It's the flagship piece of the series. Its annual mintage is the highest of the entire set and it is Mexico's official bullion benchmark. Collectors and physical-silver investors always go after this denomination first.

Context of the year. In 2012 Felipe Calderón was in office until November and Enrique Peña Nieto from December 1. An alternation with the PRI's return to Los Pinos. Silver closed at 30.35 USD per troy ounce.

Proof finish. The Proof finish, also known as mirror, is achieved by polishing the dies to a specular shine in the fields, while the reliefs are frosted by micro-sandblasting. The piece comes off the press ready for display: it's not touched in the open air or handled without gloves. Banxico delivers it in a sealed plastic capsule with an individually numbered certificate of authenticity. The Proof mintage is always far lower than the regular finish of the same year, and its price on the secondary market usually runs between 40% and 80% above the equivalent BU version.

Mintage. Banxico reported in its official tables a mintage of 6,891 pieces for this combination of fraction, year and finish. That number is the basis for measuring the relative scarcity of the piece within the program.