100 Pesos Chiapas (2005): Value of the Silver-Center State Coin

If you inherited or found a 2005 100 Pesos coin from Chiapas, here is the honest answer: most of its value comes from the silver inside, not from rarity. In 2026, a typical example sells for roughly USD 30 to 60, with sealed or high-grade pieces reaching more. It is a real bullion-backed collectible, not a fortune, but it is worth far more than face value.

What this coin actually is

This is a bimetallic 100 Pesos coin from the Mexican state series officially called "180 Aniversario de la Unión de los Estados en una Federación" (180th Anniversary of the Union of the States into a Federation). Chiapas belongs to the second, cultural phase of that program. "Bimetallic" means it has two parts: an outer ring and a central core.

The key detail for value: the center core of these coins is struck in .925 sterling silver. That silver content gives the coin a price floor well above its 100-peso face value.

Value by condition (2026)

Most circulated examples trade close to their silver value. Coins still sealed in the original Banco de México (Banxico) blister pack, or certified in high grade, sell for a premium.

Condition	Approximate value (USD)
Circulated	30 to 40
Uncirculated (loose)	40 to 55
Sealed in original Banxico blister	55 to 75+

These are guide ranges. The silver spot price moves, and that moves the floor on this coin. Check current silver prices before you buy or sell.

Technical specifications (verify yours against these)

• Face value: 100 pesos
• Year: 2005
• Weight: 33.94 grams
• Diameter: 39 mm
• Composition: Bimetallic, silver center core (.925 sterling)
• Edge: Interrupted reeded edge
• Finish: Satin
• Era: Nuevos Pesos and modern issues

Obverse (front): The Mexican National Coat of Arms, an eagle devouring a serpent on a nopal cactus. This obverse is shared across the entire 100 Pesos state series.

Reverse (back): A cultural motif representing Chiapas, which may show local architecture, wildlife, an archaeological site, a traditional dance, or regional dress. Confirm the exact design against the official Banxico catalog before cataloging your piece, since the series covers all Mexican states.

Is it rare?

No, not in the numismatic sense. These state coins were minted in reasonable quantities and are readily available to collectors. Their value is driven by silver content and demand for the complete state set, not by scarcity. Collectors who want the full series will pay a small premium for a clean or sealed Chiapas coin, which is where most of the upside sits.

The exception is genuine mint errors: off-center strikes, die rotation, or double strikes. If verified by a grading service, these can multiply the value. Be careful, most "errors" posted online are post-mint damage (dings, corrosion), not factory errors.

How to tell if yours is genuine

Weigh it and measure it. A real coin weighs 33.94 grams and measures 39 mm across. Use a jewelry scale and a caliper. Counterfeits usually miss the weight or diameter, show flat, mushy relief, or have the silver and outer ring colors poorly separated. If your numbers match and the strike is sharp, you almost certainly have the real thing.

For confirmation, submit it to a grading service like NGC or PCGS, or bring it to a verified numismatic dealer.

Where to sell

The safest routes are a verified numismatic dealer from the Pesoteca directory, who can value it on the spot, or the Pesoteca buy-and-sell forum, where you deal directly with collectors. Photograph the obverse, reverse, and edge, and check the value ranges above before you sell. Avoid dumping it to the first buyer on social media.

Before you grade or sell, read the Pesoteca coin grading guide to place your piece in the right condition range. You can also compare it against the rest of the 100 Pesos state series to see how a full set adds value.

Got the full Chiapas coin sealed in its Banxico pack, or think you spotted a striking error? Post clear photos in the Pesoteca forum and let the community weigh in.

The entry dedicated to Chiapas 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 Temple of the Inscriptions at Palenque, tomb of the ruler K'inich Janaab' Pakal discovered by Alberto Ruz Lhuillier in 1952. Pakal the Great ruled Palenque from 615 to 683 AD. His burial chamber beneath the Temple of the Inscriptions held the famous slab with a relief of the king descending into the underworld, the jade mask and offerings. The site was declared a UNESCO World Heritage Site in 1987.

State context: Chiapas was a province of the Captaincy General of Guatemala until September 14, 1824, when it voted to annex itself to Mexico. Its capital is Tuxtla Gutiérrez and it is home to active Tzotzil, Tzeltal and Tojolabal communities.

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 streets later. 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 Chiapas Coat of Arms 2003 sister 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 Chiapas.