100 Pesos Campeche 2005 (Silver Center Coin): Value & Prices

If you inherited a chunky two-tone Mexican 100 pesos coin dated 2005 with the Campeche state crest, the fast answer is this: its real floor is the silver inside it, roughly 50 to 60 USD as of 2026, not a collector fortune. It is a genuine silver coin, but it is not rare enough to command big premiums in circulated shape.

This piece belongs to the 100 Pesos Estados series, a large set of bimetallic (two-metal) coins the Bank of Mexico issued for the 180th anniversary of the Mexican Federation. Campeche falls in the first, heraldic wave: the reverse does not show a cultural motif, it shows the coat of arms of the State of Campeche, with the year 2005, the mint mark "Mo" (Mexico City), and the value 100.

What it's actually worth

There are two numbers to know, and they don't always match.

Silver value (the floor). The silver center holds about 0.643 troy ounces of pure silver (roughly 20 grams of fine silver). At silver spot prices in 2026, that puts the melt value in the range of 50 to 60 USD. This is the price no honest buyer should go below.

Collector value. Numismatic guides such as Numista list this coin around 20 to 35 USD by grade in typical condition. That is below its own silver content, which tells you something important: in circulated shape, the metal, not the collector demand, sets the real price. You are essentially holding a silver bullion piece with a face value on it.

Uncirculated or graded examples in a slab (NGC or PCGS) can bring a modest premium over melt, but do not expect hundreds of dollars for a standard business-strike coin.

Coin	Year	Metal content	Realistic value (2026)
100 Pesos Campeche	2005	.925 silver center (~0.643 oz pure) + aluminum bronze ring	~50 to 60 USD (silver floor); collector guides list lower

Is it rare?

The official mintage was 249,040 pieces. That is a low figure for a circulating coin, which sounds promising. The catch is that almost all of them were set aside and never circulated, so nice examples are easy to find. Low mintage plus high survival equals modest value. Genuine rarity needs low mintage and few survivors, and this coin only has the first half.

Specs (so you can verify yours)

• Total weight: 33.94 g
• Diameter: 39 mm
• Composition: .925 silver center in an aluminum bronze ring (bimetallic)
• Pure silver content: ~0.643 troy oz (~20 g fine silver)
• Edge: interrupted reeded edge
• Reverse: coat of arms of the State of Campeche, legend ESTADO DE CAMPECHE, year 2005, mint mark Mo, value 100
• Obverse: Mexican national coat of arms (shared across the whole series)

How to tell if yours is genuine

Start with the weight and the two-metal contrast, they are the fastest tells.

1. Weigh it. A real coin is 33.94 g. A significant miss on a jeweler's scale is a red flag.
2. Check the diameter: 39 mm.
3. Look at the two metals. The center should be matte silver, the outer ring a warmer aluminum-bronze color. That contrast is hard to fake convincingly.
4. Read the reverse. It should carry the Campeche state crest with the year 2005 and the Mo mint mark. Note: this coin does not show the Calakmul jade mask, that motif belongs to a different collector issue, so don't assume yours is the wrong one.
5. Feel the edge: interrupted reeding.

If you want certainty, a professional grading service (NGC, PCGS) will authenticate and grade it, though for a coin at this value level the fee may not be worth it unless it's in top condition.

Where to sell it

Because the value is driven by silver, sell it the way you'd sell bullion: know the daily silver price first so nobody buys it under melt. Check the Pesoteca shop directory to compare offers from dealers before you commit. Coin shops, precious-metal buyers, and online marketplaces all handle silver Mexican coins; get more than one quote.

Before you close any deal, do the math on the silver value that day and treat 50 to 60 USD as your baseline in 2026.

Got the full 32-piece states series, or just this one Campeche coin? Post a photo of your edge and weight in the Pesoteca forum and we'll help you confirm it's the real thing.

The listing dedicated to Campeche 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 Temple I, or the Temple of Chaac at Edzna, a five-story pyramid-palace that combines residential and ceremonial functions. Edzna flourished as a regional Maya capital between 400 BC and 1500 AD according to INAH chronology. Its Temple of Chaac rises to 40 meters in height, and its hydraulic system of canals and reservoirs fed a population estimated at 25,000 inhabitants at its peak.

Context of the state: Campeche separated from Yucatan on May 3, 1858. Its capital, San Francisco de Campeche, preserves the only complete colonial walled precinct in Mexico, a UNESCO World Heritage Site since 1999.

In the Mexican numismatic market the Cultural phase circulated less than the 2003 Coat of Arms phase and today is usually found in higher grades because it reached the streets 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 2003 Coat of Arms sister of Campeche is part of the first phase of the series, with the state's official coat of arms on the reverse. Hunting both pieces completes the set dedicated to Campeche.