1/2 oz Silver Libertad 1999: Value & How to Sell

If you inherited a 1/2 oz Silver Libertad dated 1999, here is the short answer: it is worth its silver content plus a modest collector premium. That means roughly 20 to 45 USD for a raw circulated or uncirculated piece in 2026, with certified examples in top proof-like grades reaching higher. It is not a rare fortune, but it is real silver, which gives it a hard floor.

This is a bullion coin, not a scarce error or a Spanish colonial treasure. Do not let anyone convince you it is worth thousands just because it is Mexican and 25 years old. Below is what it actually is, what drives the price, and how to sell it without getting shortchanged.

What the coin actually is

The Onza Libertad is Mexico's flagship silver bullion series, minted by Casa de Moneda de México (the Mexican Mint). "Onza" means ounce; "Libertad" refers to the winged Victory figure on the reverse. This particular piece is the half-ounce (1/2 onza) version dated 1999.

Key specs, verified and worth confirming on your own coin:

• Metal: pure silver, .999 fineness
• Weight: 15.5517 grams (half a troy ounce of silver)
• Diameter: 33 mm
• Edge: reeded
• Design: the National Coat of Arms surrounded by historic eagles and Codex Mendoza elements on the obverse; the Winged Victory from Mexico City's Angel of Independence monument, with the Popocatépetl and Iztaccíhuatl volcanoes behind her, on the reverse.

The 1999 date is a single-year issue for this design, which uses the redesigned obverse the Mint introduced in 1996 and formalized by decree in the Diario Oficial de la Federación on May 20, 1999.

What it is worth

Because it is a bullion coin, value starts at the silver melt price. Half a troy ounce of .999 silver tracks the international silver spot price, so the floor moves with the market. On top of that floor sits a collector premium that depends on condition.

Condition	Typical value (USD, 2026)
Circulated / handled	silver melt to about 25
Uncirculated, raw	about 25 to 45
Certified MS/PF high grade (NGC/PCGS)	50 and up, depends on grade and demand

These are working ranges, not fixed prices. The single biggest swing factor is condition, and the second is whether the coin has been professionally graded. A raw coin and a certified MS-69 of the same date can sell at very different numbers.

On mintage: for years before Banxico's official CM10 production table (which starts in 2000), no official per-year mintage was published for this half-ounce denomination. Collector forums speculate, but no confirmed figure exists. Low documented mintage would push premiums up if it were ever verified; for now, price it as bullion plus condition.

Is it rare?

Honestly, no, not in the sense most people mean. It is a modern bullion coin produced for investors and collectors, not a scarce classic. What can make an individual piece more valuable is grade (a flawless certified example) or a genuine, verifiable mint error. Most "errors" people spot are post-mint damage, scratches, corrosion, or contact marks, which lower value rather than raise it. A real off-center strike or die rotation confirmed by a grading service is a different story.

How to tell if yours is genuine

Silver bullion is faked, so check before you buy or sell.

1. Weigh it. It must weigh 15.5517 grams. A digital jewelry scale settles most questions. Off by more than a tenth of a gram and you have a problem.
2. Measure it. 33 mm diameter, reeded edge. Wrong size is a red flag.
3. The ping test. Balance the coin on your fingertip and tap it lightly. Real .999 silver rings with a high, sustained tone. Fakes sound dull and short.
4. Get it certified for anything valuable. For a high-grade or higher-value piece, submission to NGC or PCGS is the definitive answer. Certification also raises resale value.

Where to sell it

Since this is a precious-metal coin, sell where the buyer can verify the piece in front of them and where you are not paying a middleman markup.

• Verified coin shops. A reputable numismatic dealer will appraise and buy on the spot. Check the Pesoteca shop directory to find one by city.
• Collector-to-collector. The Pesoteca buy-and-sell forum puts you in front of collectors who know the series and pay fair value.
• Online marketplaces. Possible, but this is also where fakes circulate most. If you buy, demand photos of the edge and the seller's weight reading. If you sell, photograph the obverse, reverse, and edge clearly.

Before you sell, photograph all three sides, weigh the coin, and check the range in this listing so you know your number. Do not dump it to the first Facebook offer. For related silver bullion, see our guides to the full 1 oz Onza Libertad and other pieces in the Pesoteca catalog.

Got one in the drawer and not sure what grade it is? Post clear photos of both sides and the edge in the Pesoteca forum and the community will help you price it before you sell.

1/2 troy oz Libertad silver 1999 Regular BU

This piece is the 1/2 troy oz silver Libertad, minted by the Mexican Mint in 1999 in its Regular BU version.

Technical details. It contains 15.55 g of pure silver, .999 fineness, and measures 33 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 the family's mark of identity.

Role within the set. It is the upper-intermediate fraction. It weighs exactly half of the flagship piece and is usually minted in smaller runs than the full ounce, which gives it a profile of relative scarcity within the year's set.

Context of the year. In 1999 Ernesto Zedillo Ponce de Leon was in office. The Bank of Mexico marked its 75th anniversary. The ounce closed the 20th century at low silver quotations near 5.20 USD per troy ounce.

Regular BU finish. The Regular finish, cataloged by Banxico as satin or BU, is produced with dies that receive no special polishing. The result is an even matte luster across the entire surface, with no mirror contrast between fields and reliefs. It is the traditional bullion finish: bought for its weight in pure silver plus a modest die premium. It is the version collectors seek to build the complete set by year without decapitalizing on each piece.

Mintage. The exact mintage of this combination does not appear in the Bank of Mexico's public 2000-2025 tables. For pieces outside that range, the Mint's specific catalog must be consulted.