1/20 oz Silver Libertad 2005: Value & Price Guide

If you inherited or found a tiny Mexican silver coin marked "1/20 onza," here is the short answer: the 2005 1/20 oz Silver Libertad is one of the harder dates to find, with only 3,067 pieces struck in the satin finish. That low mintage is what gives it collector value above the silver itself. A worn example trades for a modest premium over melt, while a certified high-grade coin can bring several hundred dollars.

What this coin actually is

The "Libertad" is Mexico's official bullion coin, minted by the Casa de Moneda de México (the Mexican Mint). The 1/20 oz version is the smallest silver Libertad, and it is genuinely tiny. Think smaller than a US dime.

Specifications for the 2005 issue:

• Metal: .999 fine silver (99.9% pure)
• Weight: 1.5552 grams (1/20 of a troy ounce)
• Diameter: 16 mm
• Edge: reeded
• Design: the Mexican coat of arms (an eagle) on the front, and the Winged Victory (the "Ángel de la Independencia" statue in Mexico City) with the Popocatépetl and Iztaccíhuatl volcanoes behind her on the back

This coin belongs to the New Libertad Series, a design introduced by the Mint in 1996 and formalized by Mexican decree in 1999. The 2005 date is a one-year issue, so there are no year variants inside this specific coin.

What it's worth in 2026

Two things drive the value: silver content and rarity. Because the coin weighs only 1.5552 grams, its melt value is small, usually a couple of dollars. The real money is in the low mintage and the grade.

Condition	What it means	Typical value (USD)
Circulated / worn	Handled, scratches, dull	Small premium over silver, roughly 15 to 40 USD
Uncirculated (raw)	No wear, original luster	50 to 150 USD
Certified MS-67 to MS-69	Graded by NGC or PCGS	150 to 500+ USD

The satin-finish 2005 issue with only 3,067 coins is the version collectors chase. Mirror (proof-style) variants from the same year exist and are cataloged separately. Because so few were struck, a certified top-grade example can sell well above the ranges above when two serious collectors want the same piece. Prices on fractional Libertads move with demand in the Mexican and US collector markets, so treat these as guide ranges, not fixed quotes.

Compare that to a common-date 1 oz Silver Libertad, which usually trades close to its silver value plus a small premium. The 1/20 oz 2005 is worth more per gram precisely because it is scarce, not because it is old.

The myth to avoid

Small old-looking silver coins get talked up online as "rare treasures." Most fractional Libertads are not rare and sell for a few dollars over melt. The 2005 1/20 oz is a real exception because of its documented low mintage, but do not assume every tiny silver Mexican coin is a jackpot. A worn 2005 in a junk box is still worth checking, but a common date from a high-mintage year is essentially a bullion coin.

How to tell if yours is genuine

Counterfeits of small silver coins exist, so verify before you buy or celebrate:

1. Weigh it. A genuine coin weighs 1.5552 grams. Off by more than a hair? Be suspicious.
2. Measure it. Diameter must be 16 mm with a reeded (grooved) edge.
3. The ping test. Real .999 silver produces a clear, ringing tone when balanced on a fingertip and gently tapped. Fakes sound dull and short.
4. Certification. For a coin that can reach several hundred dollars, professional grading from NGC or PCGS is the safest confirmation. It authenticates the coin and assigns a grade that buyers trust.

Where to sell or buy

Because this is a precious-metal coin, deal only with people who will show you the piece, its weight, and clear photos of the front, back, and edge before money changes hands.

• A verified numismatic shop gives you an on-the-spot appraisal.
• Collector-to-collector sales through a trusted forum usually get you a fairer price than dumping it to the first bidder on social media.
• General marketplaces can have good prices but also the most fakes, so always request edge and weight photos.

If you have the 2005 1/20 oz Silver Libertad or think you have a striking error on yours, post clear photos of both sides and the edge in the Pesoteca forum. The community can tell you fast whether you are holding one of the 3,067 or a common piece dressed up as something more.

1/20 troy ounce Libertad silver 2005 Regular BU

This piece is the silver Libertad of 1/20 troy ounce, struck by the Mexico City Mint in 2005 in its Regular BU version.

Technical data. It contains 1.55 g of pure silver at .999 fineness and measures 16 mm in diameter. On the reverse it bears the effigy of the Angel of Independence, adopted by Banxico as the official symbol of the series since 1981. On the obverse appears the National Coat of Arms in its pre-1969 version, along with other historical coats of arms as an identity mark of the family.

Role within the set. It is the smallest fraction of the set. It serves as an entry piece, a gift, or a first contact with the series: it costs little per specimen but carries the highest premium of the family over the value of the silver it contains, because the die cost is spread over fewer grams.

Context of the year. In 2005 Vicente Fox Quesada was in office. The price of silver rose on average to 7.31 USD per troy ounce. A good sign for the Libertad market.

Regular BU finish. The Regular finish, cataloged by Banxico as satin or BU, is produced with dies without special polishing. The result is an even matte shine over the entire surface, without mirror contrast between fields and reliefs. It is the traditional bullion finish: it is bought for its weight in pure silver plus a modest die premium. It is the version hunters look for to build the complete set by year without decapitalizing on each piece.

Mintage. Banxico reported in its official tables a strike of 3,067 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.