1/2 Onza Libertad Silver 1986: Value & How to Sell

If you inherited or found a 1986 1/2 Onza Libertad silver coin, here is the straight answer: it is a real .999 silver bullion coin, so it always carries a floor value tied to the silver market. Most examples trade close to melt (currently roughly 15 to 25 USD depending on the silver price), but clean, uncirculated 1986 pieces can bring a premium because this was the debut year of the half-ounce.

What this coin actually is

The Onza Libertad ("Liberty Ounce") is Mexico's flagship silver bullion series, struck by the Casa de Moneda de México (the Mexican Mint). The series started in 1982 with a full one-ounce coin. In 1986, the Mint added the fractional sizes: 1/2, 1/4, 1/10 and 1/20 ounce. So the 1986 1/2 Onza is the first-ever half-ounce Libertad, which matters to date collectors.

The design is the classic Libertad: the Ángel de la Independencia (the Winged Victory statue from Mexico City) flying over the Valley of Mexico with the two volcanoes behind her. The reverse carries the Mexican national coat of arms, the eagle on a cactus with a snake.

Specifications (verify yours against these)

Feature	Value
Metal	Pure silver, .999 fine
Weight	15.5515 grams (1/2 troy ounce)
Diameter	29 mm
Edge	Reeded
Year	1986 (first year of the fraction)
Mint	Casa de Moneda de México

Grab a jewelry scale and a caliper. If your coin does not weigh close to 15.55 grams or measure 29 mm, treat it as suspect until proven otherwise.

What it is worth

Because it is bullion, the 1/2 Onza Libertad has a hard floor: its melt value. At current silver prices that floor sits in the low-to-mid teens in USD, moving with the market. That is what an average circulated or handled example is worth, plus a small dealer premium.

Where the number climbs is condition. Grade drives everything here. A 1986 half-ounce with original mint luster and no bag marks (an uncirculated coin, or one graded MS-68 or higher by NGC or PCGS) can bring a meaningful premium over melt, sometimes two to four times, because early-year fractionals had modest mintages compared with the big one-ounce coin and are hard to find pristine. A scratched, cleaned or heavily circulated piece is worth its silver and little more.

Honest range: from melt value (mid-teens USD) for a worn example up to the low hundreds of dollars for a top-graded, certified 1986 in a slab. Do not expect "worth thousands" numbers you may see repeated online for this specific date and size. That is not this coin.

Why 1986 carries a small edge

As the debut year of the fractional Libertad, the 1986 anchors the start of any date-run collection. The early fractionals were struck in smaller quantities than the full ounce, so high-grade survivors are scarcer than the mintage alone suggests. That is the whole reason a nice 1986 outperforms a common later year at auction.

How to tell if yours is genuine

• Weigh and measure it. 15.5515 g and 29 mm. Counterfeits usually miss on weight or diameter.
• Check the relief. Genuine coins have crisp, dimensional detail on the Angel and the eagle. Flat, mushy relief is a warning sign.
• Watch the color. Pure silver tones evenly. Blotchy or oddly colored plating suggests a fake or a plated base-metal copy.
• Distrust bargains. Any offer far below the silver value is almost certainly a fake or a scam.
• If you want certainty, submit it to NGC or PCGS for authentication and grading, which also unlocks the top of the price range.

Where to sell it

Since this is a precious-metal coin, sell it where the buyer will show you the piece and confirm the weight in front of you. Your best options:

• A verified coin dealer from the Pesoteca shop directory, who can value it on the spot at a fair premium.
• The Pesoteca buy-and-sell forum, collector to collector, where early Libertads have a steady following.

Before you sell, photograph the obverse, reverse and edge, and check the price range on this page so you are not underpaid. Skip dumping it on social media to the first bidder. If you have the full 1986 fractional set (1/2, 1/4, 1/10, 1/20), keep it together, complete debut-year sets are worth more than the sum of the singles.

Have a 1986 half-ounce you are not sure about? Post clear photos of both sides in the Pesoteca forum and the community will help you grade it and spot any genuine mint errors.

1/2 troy ounce Libertad silver 1986 Regular BU

This piece is the 1/2 troy ounce silver Libertad, struck by the Mexican Mint in 1986 in its Regular BU version.

Technical data. 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, 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, alongside other historical coats of arms as the family's identity mark.

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

Context of the year. In 1986 Miguel de la Madrid Hurtado was in office. Mexico hosted the FIFA World Cup. Inflation closed the year at 105.7% annually.

Regular BU finish. The Regular finish, cataloged by Banxico as satin or BU, is obtained with dies that have no special polishing. The result is an even matte shine across the entire surface, with no 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 collectors seek to build the complete set by year without decapitalizing on every 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, one must consult the specific Mint catalog.