100 Pesos Estado de México (2006): Silver-Center Coin Value

If you inherited or found a large, two-tone 100 pesos coin marked "Estado de México" dated 2006, here is the honest answer: it is not a fortune, but it is not junk either. The center is real .925 silver, so it has a floor value in metal. In 2026, circulated examples trade for roughly 10 to 30 USD, while certified high-grade pieces can reach 40 to 80 USD or more.

What you actually have

This is one of the 32-coin series the Bank of Mexico (Banxico) issued to honor each Mexican state. Yours belongs to the second phase of that program, the one that added a genuine silver core to raise the coin's real value. Each coin in this second series carries the same construction:

• Outer ring: silver-plated alpaca (a copper-nickel-zinc alloy), not precious metal.
• Center core: .925 sterling silver.
• Weight: 33.95 grams.
• Diameter: 39.06 mm.
• Edge: interrupted reeding.
• Year: 2006 only, single year of issue.

The reverse shows cultural motifs of the State of Mexico with the state coat of arms as the focal point. It is a big, heavy coin that feels substantial in hand, which is part of why collectors like the series.

Is it worth money?

The realistic value comes from three things: the silver content, the grade, and demand from people building the full 32-state set.

The silver center is small, so the melt value is modest, a few dollars, not the whole coin. What lifts the price is condition. The silver core tones and scratches easily, so an untouched example in high grade sells for meaningfully more than one that jingled around in a drawer or circulated.

Coin	Year	Condition	Typical value (USD)
100 Pesos Estado de México	2006	Circulated, worn	10 to 30
100 Pesos Estado de México	2006	Uncirculated (UNC)	30 to 50
100 Pesos Estado de México	2006	Certified MS-65+ (NGC/PCGS)	50 to 80+

These are working ranges, not guaranteed sale prices. A single coin from a common modern series rarely breaks past that band unless it carries a verified mint error.

The myth to kill

Because the mintage figure for this specific issue is not published by Banxico, forums fill the gap with speculation. Do not read "unknown mintage" as "extremely rare and worth thousands." It usually means the coin was released in limited numismatic sets or a short run, not that it is a five-figure rarity. No confirmed record sale puts this piece anywhere near collector-legend territory. If you see a listing asking hundreds of dollars for a plain circulated example, that is wishful pricing, not market value.

How to tell if yours is genuine

Start with the numbers. A real one weighs 33.95 grams and measures 39.06 mm. If your coin misses those specs, you likely have a fake or a damaged piece. Genuine strikes have sharp, crisp relief; counterfeits and casts look flat and mushy. Compare the detail against official Banxico images.

For anything you think is high grade, third-party certification from NGC or PCGS settles the question. A slab confirms both authenticity and grade, which is exactly what a serious buyer wants to see.

About "error" coins

Genuine mint errors (off-center strikes, die rotation, doubled dies) can multiply a coin's value when they are real and verifiable. But most "errors" people post online are post-mint damage: dings, corrosion, scratches. That adds nothing. If you think you have a true error, photograph it clearly and post it in the Pesoteca forum so the community can weigh in before you assume it is valuable.

Where to sell it

Your safest options, in order:

1. A verified numismatic shop from the Pesoteca directory, which appraises it on the spot with no middleman markup.
2. The Pesoteca buy-and-sell forum, where you deal directly with collectors who actually want the state series.
3. General marketplaces, which can work but attract the most fakes, so buyers will demand edge and weight photos.

Before you list, photograph the obverse, reverse, and edge in good light, and note the weight. If you are selling as part of the full 32-state set, keep it together; complete sets sell for a premium over loose singles.

Have a full box of these state coins and want to know what the whole set is worth? Post your photos in the Pesoteca forum and get a straight answer from collectors who track this series.

The entry dedicated to the State of Mexico came out in 2006 as the only piece of the Cultural phase that year, between the first wave of 2005 and the three late ones of 2007. Banxico called this second stage Motivos Emblematicos and replaced the state coat of arms with a specific cultural symbol.

The reverse of the piece shows the Pyramid of the Sun at Teotihuacan, the third largest pyramidal structure in Mesoamerica at 65 meters tall. Teotihuacan, the city of the gods in Nahuatl, reached an estimated population of 125,000 inhabitants between 100 BC and 650 AD according to INAH studies, making it the sixth largest metropolis of the ancient world. The Pyramid of the Sun aligns with the solar zenith passage on May 18 and July 25, and a ceremonial tunnel-cave runs beneath it. A UNESCO World Heritage Site since 1987.

State context: The State of Mexico was established on March 2, 1824. Its capital Toluca de Lerdo sits at 2,680 meters of altitude, the highest in the country among state capitals. It surrounds Mexico City and is the most populous entity in the Republic with more than 17 million inhabitants.

In the Mexican numismatic market the Cultural phase circulated less than the 2003 Coat of Arms 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 to 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 sister 2003 Coat of Arms of the State of Mexico is part of the first phase of the series, with the official state coat of arms on the reverse. Hunting down both pieces completes the set dedicated to the State of Mexico.