100 Pesos Oaxaca (Cultural) 2005: Value & Where to Sell

If you inherited or found a heavy two-tone Mexican 100 Pesos coin dated 2005 with "Oaxaca" on it, here is the honest answer: it is worth more than face value, but not a fortune. Most examples trade between 15 and 40 USD in 2026, because the coin's silver center gives it a real floor. Sealed, high-grade examples with the original Banco de México packaging bring more.

What you actually have

This is part of a Mexican commemorative series honoring the country's 31 states plus Mexico City, issued under the theme "180th Anniversary of the Union of the States into a Federation." The Oaxaca coin belongs to the second, cultural phase of that series. Collectors in the US usually call these "Mexican state 100 peso coins."

The reason this coin matters is the metal. It is bimetallic: an outer ring of aluminum-bronze around a center made of .925 sterling silver. That silver core is what keeps the coin above face value no matter what. Even a worn example is worth its silver content, which sets a real floor under the price.

Value by condition (2026)

Condition drives everything here. A coin that circulated and got scratched is worth close to its silver melt. A pristine coin still in the sealed Banco de México blister pack is worth the most.

Condition	What it looks like	Approximate value (USD)
Circulated	Handling marks, dull luster	12 to 18
Uncirculated (raw)	Full luster, no wear	20 to 35
Sealed in original blister	Factory packaging intact	35 to 60
Certified MS68+ (NGC/PCGS)	Graded, top pop	60 to 150+

These are collector market ranges, not fixed prices. The exact figure depends on demand for the Oaxaca design specifically and on how many buyers are chasing the full state set at that moment.

Technical specs (check yours against these)

Use these numbers to confirm you have the genuine coin and not a fake or a different denomination:

• Weight: 33.94 grams
• Diameter: 39 mm
• Composition: bimetallic, .925 sterling silver center, aluminum-bronze ring
• Edge: interrupted reeding
• Year: 2005
• Obverse: the Mexican national coat of arms (eagle devouring a serpent on a cactus), shared across the whole state series
• Reverse: a cultural motif representing Oaxaca (architecture, a heritage site, regional dress, or local flora and fauna, depending on the exact design)

Is it rare?

Not in the strict sense. These were minted for collectors in the millions across the series, so surviving examples are common. What gives the coin value is the silver content and steady demand from people building the complete 32-piece state set. The Oaxaca piece is one of the more attractive designs, which helps it hold the upper end of the range.

Where real money shows up is in top-grade certified coins. An example graded MS68 or higher by NGC or PCGS is genuinely scarce and can bring several times the raw price. If yours looks flawless, having it graded may pay off.

The "error coin worth thousands" myth

You may have seen social media claims that these coins are worth thousands because of a mint error. Be skeptical. Genuine, verifiable striking errors (off-center strikes, die rotation, doubled dies) can multiply a coin's value, but almost everything people post online is post-mint damage: dings, corrosion, or scratches that happened after the coin left the mint. That kind of damage lowers value, it does not raise it. If you think you have a real error, get a second opinion before you believe a big number.

How to tell if yours is genuine

1. Weigh it. A jewelry scale should read 33.94 grams. A significant difference is a red flag.
2. Measure it. The diameter should be 39 mm. Use calipers if you have them.
3. Check the relief and color. Genuine coins have sharp detail and a clean line between the silver center and the bronze ring. Fakes often show flat relief or messy, bleeding color.
4. Look at the edge. It should show interrupted reeding, not smooth or fully continuous.

For a full condition walkthrough, see our Mexican coin grading guide.

Where to sell it

To sell the 2005 Oaxaca 100 Pesos, your safest option is a verified coin dealer from the Pesoteca shop directory, who can appraise it on the spot, or the Pesoteca buy-and-sell forum where collectors trade directly. Photograph the coin front, back, and edge, and compare against the ranges above before you accept an offer. Avoid dumping it on general marketplaces to the first buyer, where sterling silver coins routinely sell below their real value.

Collecting the full state series? The rest of the set lives on our 100 Pesos state coins series page.

Got the Oaxaca coin, or the whole set, and want a second opinion on grade before you sell? Post clear photos on the Pesoteca forum and let the community weigh in.

The coin dedicated to Oaxaca belongs to the first wave of the Cultural phase, issued in 2005 along with most of the set. Banxico called this second stage Emblematic Motifs and replaced the state coat of arms with a specific cultural symbol.

The reverse of the piece shows the Stone of the Dancers of Monte Alban, Zapotec reliefs that originally formed part of the base of Building L. The Dancers are around 300 stone slabs carved between 500 and 200 BC that depict human bodies in contorted postures. Archaeologists today interpret them as sacrificed captives or leaders defeated in conquest, not as dancers. Monte Alban was the Zapotec capital from 500 BC to 850 AD and a UNESCO World Heritage Site since 1987.

State context: Oaxaca was established as a state on February 3, 1824. Its capital, Oaxaca de Juarez, is the birthplace of Benito Juarez and Porfirio Diaz, two decisive presidents of nineteenth-century Mexico. The insurgent Oa mint operated from 1811 to 1814, striking wartime 8 reales with improvised dies during the War of Independence.

In the Mexican numismatic market the Cultural phase circulated less than the Coat of Arms 2003 and today is usually found in higher grades because it reached the street late. Banxico's official mintages for this piece are not always published in the Economic Information System, but the figure reported for circulation tends to be around 250,000 pieces per state in the Cultural phase. Always confirm against the catalog of the complete 100 pesos States series before closing a large purchase.

The Coat of Arms 2003 sister of Oaxaca is part of the first phase of the series, with the state's official coat of arms on the reverse. Hunting down both pieces completes the set dedicated to Oaxaca.