Mexico 100 Pesos Querétaro (Bimetallic Silver): Value & How to Sell

If you inherited a large, heavy Mexican 100 Pesos coin with a silver center and a golden ring, here is the honest answer: it is worth roughly 15 to 20 USD for its silver content in 2026, sometimes a bit more in high grade. It is not a rarity, and the whole coin is not silver. Only the center is.

This is the Querétaro piece from the second phase of Mexico's state series of 100 Pesos coins, a program that put a landmark from each Mexican state on the reverse. The reverse of this one shows the Acueducto (the historic aqueduct) of Querétaro next to the facade of the church of Santa Rosa de Viterbo, with the legend "ESTADO DE QUERÉTARO ARTEAGA 2007 MO 100 ACUEDUCTO SANTA ROSA DE VITERBO."

Watch the date: it is 2007, not 2005

A common mix-up. The second-phase coin with the aqueduct is dated 2007, not 2005. There is an earlier 2004 Querétaro coin that some people confuse with this one, but that first-phase version carries the state coat of arms instead of the aqueduct. If your coin shows the aqueduct and the church, you have the 2007 issue.

What it is made of

This is a bimetallic (two-metal) coin:

• Center: .925 sterling silver
• Outer ring: aluminum bronze (a golden-colored copper alloy, no precious metal)
• Total weight: 33.94 g
• Diameter: 39.04 mm
• Edge: interrupted (discontinuous) reeding

The key point for value: only the center disc is silver. The wide golden ring is base metal. That is why the coin looks big and valuable but carries a lot less silver than its size suggests.

How much silver is actually in it

The silver center holds about 0.62 troy ounces of pure silver. At current silver spot prices, that puts the melt value at roughly 15 to 20 USD (about 870 to 1,050 Mexican pesos). This is the floor. A worn, circulated example will not sell for much below this, because the silver gives it a baseline value.

Is it rare?

No. The mintage is around 149,100 pieces, a moderate figure within the state series. It is neither one of the scarcest nor one of the most common issues in the set. That mintage means there is no rarity premium driving the price up. What you have is essentially a silver coin plus a modest collector interest.

Value by condition

Condition	What it looks like	Approx. value (USD)
Circulated (worn)	Scratches, dull surfaces	15 to 20 (melt floor)
Uncirculated (BU)	Sharp, no wear, original luster	20 to 30
Certified high grade (MS-66/67)	Slabbed by NGC or PCGS, top surfaces	35 to 60+

The premium over melt depends entirely on grade and eye appeal. A raw circulated coin trades close to its silver value. Only certified, high-grade examples pull a meaningful collector premium.

How to tell if yours is genuine

Check the physical specs first, they are the fastest filter:

• Weight should be 33.94 g
• Diameter should be 39.04 mm
• The edge should have interrupted reeding
• The silver center should clearly differ in tone from the golden ring
• The reverse legend must read "ACUEDUCTO SANTA ROSA DE VITERBO" with the year 2007

If the weight or diameter is off, or the whole coin is one uniform color, be suspicious. For anything you plan to buy or sell above melt, third-party grading by NGC or PCGS settles both authenticity and grade in one step.

Where to sell it

This piece circulates among collectors of the Mexican state series and among silver stackers. For a fair price you want a buyer who recognizes both the silver content and the series, not a general pawn shop. Check the Pesoteca shop directory to find dealers who buy and sell these.

Have a full set of the state series, or just this one Querétaro coin? Post photos of the edge and reverse in the Pesoteca forum and we will help you confirm the year and grade before you sell.

The entry dedicated to Querétaro 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 aqueduct of Querétaro, a hydraulic work of 74 arches and 1,280 meters completed in 1738 by the marquis Juan Antonio de Urrutia y Arana. The aqueduct carried water from the Cerro de La Cañada to the colonial city for nearly two centuries. Its pink quarry-stone arcades reach up to 28 meters in height and are the urban symbol of the Querétaro capital. Querétaro's historic center was declared a UNESCO World Heritage Site in 1996.

State context: Querétaro was established as a state on December 12, 1823. It was the seat of the Conspiracy of 1810 organized by Josefa Ortiz de Domínguez, the Corregidora, and here the Political Constitution of the United Mexican States was signed on February 5, 1917, in the Teatro de la República.

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 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 2003 Coat of Arms sister of Querétaro 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 Querétaro.