1/20 oz Silver Libertad 2009 Proof: Value & Prices

If you inherited or found a 2009 1/20 oz Silver Libertad in proof finish, here is the honest answer: this is a low-mintage collector coin, not a bullion throwaway. Only 5,000 were struck by Banxico (Mexico's central bank), which puts it well above its melt value. Expect a range of roughly 30 to 90 US dollars depending on condition and whether it still has the original box and certificate, not the few pennies of silver it contains.

What you actually have

The Onza Libertad is Mexico's flagship silver coin series, first issued in 1982 and still minted today. "Onza" means ounce, and this piece is the smallest fraction in the family: one twentieth of an ounce. The "proof" finish means it was struck with specially polished dies to create mirror-like fields and frosted raised designs. Proof coins are made for collectors, not for circulation, so yours has probably never seen a wallet.

Specifications (verify yours against these):

Feature	Detail
Denomination	1/20 oz Silver Libertad
Year	2009
Finish	Proof
Weight	1.55 grams
Diameter	15.67 mm
Metal	Silver .999 fine
Edge	Reeded
Official mintage	5,000 coins

The design is the classic Libertad type: the Winged Victory (Ángel de la Independencia) on one side and the Mexican national coat of arms with historical seals on the other.

Is it rare, and what drives the value

A mintage of 5,000 is genuinely low for a modern coin. That scarcity, plus the proof finish and the small size that makes the whole 1/20 oz proof set hard to complete, is what gives this coin a premium over its silver weight. At 1.55 grams of pure silver, the metal itself is worth only a couple of dollars, so almost all of the value here comes from collector demand, not bullion.

What moves the price:

• Condition. A flawless proof with untouched mirror fields commands the top of the range. Fingerprints, hairline scratches, or milk spots (cloudy white patches common on modern silver) drop it fast.
• Original packaging. Coins still sealed in the original Banxico capsule with the certificate of authenticity sell for more than loose examples.
• Certification. A coin graded and slabbed by NGC or PCGS (for example PF69 or PF70) removes buyer doubt and can add a meaningful premium.

Realistic range in 2026: a loose, handled example runs around 30 to 45 US dollars. A clean coin with original box and papers lands closer to 60 to 90 dollars. A certified PF70 can push higher when two collectors want the same set slot.

The myth: "old silver Mexican coin, must be worth a fortune"

This is a 2009 coin, not an antique. It is worth more than melt because of low mintage and collector interest, not because of age. Do not expect thousands of dollars from a standard example. If someone online claims this exact piece is worth a huge sum, ask for the auction record, because there isn't one at that level. The value is real but modest, in the tens of dollars.

How to tell if yours is genuine

Because it is a precious-metal coin, counterfeits exist, though the small denomination is a less common fake target than the full 1 oz Libertad.

1. Weigh it. Use a jewelry scale. It should be very close to 1.55 grams. A fake in base metal will usually be off.
2. Measure it. A caliper should read 15.67 mm across.
3. Look at the strike. Genuine proofs have sharp, frosted raised details against deep mirror fields. Flat relief, mushy detail, or uneven color are red flags.
4. Be suspicious of bargains. Any offer far below the silver plus collector premium is a warning sign.

If you want certainty, submit it to NGC or PCGS, or take it to a trusted dealer.

Errors and varieties

Genuine mint errors (off-center strikes, die rotation, doubled dies) can multiply a coin's value if verified. Be careful: most "errors" shared on social media are post-mint damage such as dings or corrosion, not factory errors. If you think you have a real one, post clear photos in the Pesoteca forum so the community can weigh in.

Where to sell it

To get a fair price, avoid dumping it to the first buyer on a social feed.

• A verified numismatic shop from the Pesoteca directory will appraise it on the spot.
• The Pesoteca buy-and-sell forum puts you in front of collectors who actually want this series.

Photograph the obverse, reverse, and edge in good light, and check the price ranges on this page before you agree to anything. Because this is silver, only deal with a buyer who will let you verify the coin and its weight first.

Before you decide, compare yours to other pieces in the Onza Libertad series and read the coin grading guide so you know exactly what condition you are working with.

Have a 2009 1/20 oz Libertad sitting in a drawer and not sure if it's the proof version or a bullion strike? Post your photos in the Pesoteca forum and let collectors confirm what you've got.

1/20 troy ounce silver Libertad 2009 Proof

This piece is the 1/20 troy ounce silver Onza Libertad, struck by the Mexican Mint in 2009 in its Proof version.

Technical details. It contains 1.55 g of pure silver at .999 fineness and measures 16 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, together with other historical coats of arms as an identity marker 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 piece but carries the highest premium in the family over the value of the silver it contains, because the die cost is spread over fewer grams.

Context of the year. In 2009 Felipe Calderón Hinojosa was in office. A year of recovery after the crisis. Silver closed at 16.99 USD per troy ounce. Demand for bullion as a safe haven increased.

Proof finish. The Proof finish, also known as mirror, is achieved by polishing the dies to a specular shine on the fields, while the relief is frosted by micro-sandblasting. The piece comes off the press ready for display: it isn't exposed to 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 secondary-market price is usually between 40% and 80% above the equivalent BU version.

Mintage. Banxico reported in its official tables a mintage of 2,099 pieces for this combination of fraction, year, and finish. That number is the basis for measuring the piece's relative scarcity within the program.