2004 Silver Libertad Proof: Value & Mintage

Most Mexican silver coins are worth close to their metal value and nothing more. The 2004 Silver Libertad Proof is one of the exceptions, and the reason is simple: only 4,000 were struck. That low mintage, not the silver itself, is what pushes it above bullion price for collectors in 2026.

What is the Onza Libertad?

The Onza Libertad ("Liberty Ounce") is Mexico's flagship silver bullion and collector coin, minted by the Casa de Moneda de México (the national mint) since 1982. The obverse shows the Angel of Independence, a winged statue that stands in Mexico City; the reverse carries the national coat of arms surrounded by older Aztec eagle glyphs. It is Mexico's answer to the American Silver Eagle: a pure silver coin issued every year, in both a standard bullion finish and a limited proof finish.

The 2004 issue you have (or inherited) is the proof version. Here is what that means in plain terms:

• Metal: .999 fine silver (99.9% pure)
• Weight: 31.1 grams (one troy ounce)
• Diameter: 27 mm
• Edge: reeded
• Mintage (proof): 4,000 pieces
• Design: the Angel of Independence, used on the series since 1996

A proof is not a different coin, it is a different striking method. Proof coins are struck on polished dies to produce mirror-like fields, frosted raised details, and sharp contrast. They are made for collectors and sold in a plastic capsule, never meant to circulate. That finish is fragile: a single fingerprint or scratch on the mirror field drops the value fast.

What the 2004 Silver Libertad Proof is worth

The value comes from three things stacked together: the silver content (the floor), the proof finish, and the 4,000-piece mintage that puts it among the shorter runs in the series.

Start with the floor. As one troy ounce of .999 silver, the coin can never sell for much less than the spot price of silver, which typically runs from 25 to 35 USD per ounce depending on the market. That is the melt value, and it applies to any silver Libertad.

Above that floor, the 2004 proof commands a collector premium because of its low mintage. Clean examples in the original capsule generally trade in the range of 80 to 200 USD, and certified high-grade pieces (graded PF69 or PF70 by PCGS or NGC) can bring more when two collectors want the same slot in a year-by-year set. Condition is everything with a proof: an untouched mirror field is worth far more than one with hairlines or a thumbprint.

Coin	Year	Finish	Mintage	Typical value (USD)
Onza Libertad (silver)	2004	Proof	4,000	80 to 200
Onza Libertad (silver)	2004	Bullion	high mintage	melt value, 25 to 35
Onza Libertad (silver)	any recent year	Bullion	high	melt value

The takeaway: the proof is worth several times more than the everyday bullion version of the same year, and the gap is the mintage.

The myth: "it's old silver so it's worth a fortune"

A 2004 coin is not old, and being silver does not make it rare. Most silver Libertads from the 2000s were struck in the hundreds of thousands or millions in bullion finish, and those are worth their metal, period. The 2004 proof is the exception only because the proof mintage was capped at 4,000. Do not confuse the two versions: a plain 2004 bullion Libertad found in a drawer is a melt-value coin, not a 200-dollar collector piece.

How to tell if yours is the proof

• Fields: proof coins have deep mirror-like backgrounds that reflect like glass. Bullion coins are flat and matte.
• Capsule: proofs were sold in a clear plastic capsule. If yours is loose and worn from handling, it may be a bullion strike or a proof that lost its capsule.
• Weight and diameter: confirm 31.1 grams and 27 mm with a jewelry scale and a caliper. A coin that is off on weight or size is a red flag for a fake.
• Detail: the frosted raised design against the mirror field is the signature of a genuine proof.

How to check authenticity

Weigh it and measure it first, then compare against the specs above. Counterfeits often miss on weight or diameter, show flat relief, or have a dull uniform surface with no proof contrast. Be suspicious of any coin offered well below the value of the silver it contains, that alone is a warning sign. For a coin you plan to sell for a real premium, third-party grading by NGC or PCGS confirms both authenticity and grade in one step, and a slabbed PF69 or PF70 sells faster and higher.

Where to sell it

Because this is a precious-metal coin, sell where the buyer will show you the piece and its weight before money changes hands:

• A verified coin shop from the Pesoteca dealer directory will appraise it on the spot.
• The Pesoteca buy-and-sell forum connects you directly with collectors who complete year-by-year Libertad sets, which is exactly where a 4,000-mintage proof finds its best price.

Photograph the obverse, reverse, and edge in good light, note the grade, and check the range in this page before you accept an offer. Do not dump it on the first social-media bidder.

Have a 2004 Libertad and not sure if it's the proof or the bullion strike? Post clear photos of both sides on the Pesoteca forum and the community will tell you which one you have and what it should bring.

1 troy oz Libertad silver 2004 Proof

This piece is the 1 troy oz silver Onza Libertad, minted by the Mexican Mint in 2004 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, chosen by Banxico as the official symbol of the series since 1981. The obverse shows the National Coat of Arms in its pre-1969 version, together with other historical coats of arms as the family's identity mark.

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

Context of the year. In 2004 Vicente Fox Quesada was in office. The first physical-silver ETF in the United States, the iShares Silver Trust, was launched. International demand for silver bullion took off.

Proof finish. The Proof finish, also known as mirror, is achieved by polishing the dies to a mirror shine in the fields, while the reliefs are frosted by micro-blasting. The piece comes off the press ready to be displayed: it isn't 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 is usually between 40% and 80% above the equivalent BU version.

Mintage. Banxico reported in its official tables a minting of 771,152 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.