100 Pesos Tamaulipas 2003 (Silver Center): Value & Prices
Prices updated: August 2026
Union of the States: Tamaulipas, first stage.
Union of the States: Tamaulipas, first stage.
Design
Banxico
Reverse
Official coat of arms of the state of Tamaulipas, with the perimeter legend "ESTADOS UNIDOS MEXICANOS." Reverse of the first stage of the Union of the States of the Mexican Republic series.
Obverse
Mexican National Coat of Arms within the silver center, with the denomination "100 PESOS" and the legend "ESTADOS UNIDOS MEXICANOS" on the aluminum bronze ring. Year of minting on the obverse.
How much is the 100 Pesos Tamaulipas 2003 (Silver Center): Value & Prices worth?
The market value of the 100 Pesos Tamaulipas 2003 (Silver Center): Value & Prices is not yet documented with enough data to give a firm range. Weigh and measure your piece, compare it against the specifications, and check the forum for a second opinion.
The real price depends on four factors: the grade of preservation (a circulated piece is worth the low end of the range; an uncirculated one, or one still in its official blister pack, the high end), the finish (satin vs mirror/proof), the rarity within the series based on the mintage, and the metal spot price on the day of the deal when the piece is silver or gold. Check the value-by-grade table above and compare with equivalent pieces before buying or selling.
Where to buy or sell this coin?
Browse the national directory of numismatic shops or the community forum to trade directly with other collectors.
States of the Federation
The 64 pieces of the 180th Anniversary series
This coin is part of the series that dedicated one piece to each Mexican state. Two phases: Heraldic (2003) and Cultural (2005-2007).
Description
If you inherited or found a large two-tone Mexican 100 pesos coin with a state coat of arms, you have a real silver coin, not a fortune. In 2026, the 100 Pesos Tamaulipas from 2003 typically sells for about 20 to 40 USD in uncirculated condition, driven mostly by the Sterling silver center it carries. Circulated examples trade closer to melt value.
Quick answer: what is it worth?
This coin is one of 32 pieces in the "Unión de los Estados" series that the Bank of Mexico (Banco de México) issued in 2003, one design per Mexican state. Each has a silver center and a bronze-aluminum outer ring, which is why they feel heavy and look bimetallic (two metals, two colors).
The value comes from two things: the silver, and collector demand for the complete 32-coin set. The Tamaulipas coin on its own is common. Its floor is the melt value of its silver center; its ceiling depends on grade and on collectors trying to finish the full set.
| Item | Detail |
|---|---|
| Denomination | 100 Pesos |
| Year | 2003 |
| State | Tamaulipas (coat of arms on reverse) |
| Series | Unión de los Estados de la República Mexicana |
| Weight | 33.78 grams |
| Diameter | 39 mm |
| Center metal | Sterling silver, .925 fineness |
| Outer ring | Bronze-aluminum |
| Edge | Interrupted reeded |
| Typical value (circulated) | Near silver melt, roughly 12 to 18 USD |
| Typical value (uncirculated) | About 20 to 40 USD |
Is it silver? Yes, the center is
The silver-colored middle is genuine Sterling silver at .925 fineness. That gives every one of these coins a hard price floor: even a worn, scratched example is worth its silver content, which for the small center disc lands in the low-to-mid teens in USD depending on the silver spot price the day you check. That is the number a buyer will never go below.
The gold-colored outer ring is bronze-aluminum, an alloy with no bullion value. Do not let a buyer tell you the whole coin is silver by weight; only the center is.
Is it rare?
No. Millions of these state coins were struck across the 32 designs, and Tamaulipas is not a key date within the series. What people pay for is a clean, uncirculated coin or the entire set of 32 assembled together. A single Tamaulipas piece in average condition is a common coin with a silver floor, nothing more.
Where the money changes is grade. A coin certified in high mint state by a grading service such as NGC or PCGS can pull a premium over a raw coin from a drawer. If yours has never circulated, has full luster, and no bag marks, it is worth getting a second opinion before selling.
What actually drives the price
- Silver content: the permanent floor. Weigh it (33.78 grams total is correct) and check the .925 center.
- Grade: an uncirculated, mark-free coin beats a scuffed one by a wide margin.
- Set demand: collectors finishing all 32 states pay more per coin than someone buying one off.
- Genuine mint errors: off-center strikes, die rotation, or double strikes can multiply value, but they are rare and often confused with post-mint damage.
The "error" myth
Most "error" coins people post online are not errors. Dings, corrosion, and wear happen after the coin leaves the mint and add nothing. A true mint error is present at the moment of striking and is consistent and clean. If you think you have one, do not assume it is worth thousands; get it verified first.
How to tell if yours is genuine
Counterfeits of these coins exist but are usually easy to catch:
- Weigh it. A genuine coin is 33.78 grams. A jewelry scale will flag a fake fast.
- Measure it. Diameter should be 39 mm. Use calipers.
- Check the relief and colors. Real strikes have sharp, dimensional detail and a clean line between the silver center and the bronze ring. Fakes look flat and have color that bleeds or sits unevenly.
- Check the design. The reverse shows the official Tamaulipas coat of arms (a cross over a star with palms). The obverse carries the Mexican national coat of arms in the silver center with the 100 pesos denomination, shared across all 32 coins.
Where to sell it
To sell the 100 Pesos Tamaulipas 2003 for a fair price, use a verified numismatic dealer who can value it on the spot, or sell to other collectors directly. Photograph the obverse, reverse, and edge in good light before you list it. Do not dump it to the first Facebook offer; that is where people lose the silver premium.
- Browse verified coin shops in Tamaulipas with honest reviews.
- Post it in the Pesoteca buy-and-sell forum to reach collectors.
- See how it fits the complete 100 Pesos state series, which documents all 32 first-stage coins plus the later Cultural 2005 companions.
Got one sitting in a drawer, or trying to finish the full 32-state set? Post clear photos of the front, back, and edge in the Pesoteca forum and let the community tell you exactly what grade and price you're looking at.
Historical context
The 100 pesos Union of the States of the Mexican Republic series began in 2003 with its first stage, called the Coat of Arms stage because the reverse bears the official heraldry of each of the 32 states. The piece dedicated to Tamaulipas is part of that first block of 32 coins, issued by Banxico under the framework of the Monetary System that has governed the modern peso since the Nuevos Pesos reform of 1993.
Tamaulipas has Ciudad Victoria as its capital. It is one of the original states of the Federal Pact of 1824, signed on January 31 of that year. The reverse of the piece shows the state's official coat of arms, with no references to specific historical episodes: the central motif is the heraldic emblem. For mintages and economic circulation data of each piece in the series, the sources are Banxico's official reports; until they are verified in the CM10 catalog they are not reported in this entry.
This piece belongs to the era
Nuevos Pesos y actualidad →Explore all the Mexican coins of this era, their historical context and how they connect to the monetary system of the period.
Go deeper on this coin
100 pesos de los Estados: la moneda de plata dedicada a tu estado (guía completa Escudo y Cultural)
Banxico acuñó una moneda de plata para cada uno de los 32 estados de México, y luego lo hizo dos veces. Aquí está la guía completa de las 100 pesos de los Estados: qué son, la diferencia entre la versión Escudo y la Cultural, por qué el centro de plata importa, cómo armar la colección y la lista de las 64 fichas para que caces la de tu tierra.
Read the full article →Unique context of this piece
The coat of arms of Tamaulipas shows a cross over a star with palms in the background, a Hispanic heritage and a reference to the northern territory.
Tamaulipas is a border state with Texas, with major ports such as Tampico and industrial cities such as Reynosa and Nuevo Laredo.
Tamaulipas did not have a colonial mint during the Mexican viceroyalty, but it joined Banxico's official commemorative program when the Bank of Mexico made the "Union of the States of the Mexican Republic" series official in 2003. This bicolor 100-peso piece is the first and only official coin dedicated specifically to the state of Tamaulipas during its first stage.
If you want to hunt this piece down in person or find specialized collectors in Tamaulipas, check the Tamaulipas store hub, where we document the state's verified stores with honest reviews, addresses and contact details.
The Cultural 2005 sibling of Tamaulipas is your next target if you are building the full 64-piece series. The full 100 Pesos States series also has the complete catalog with every sibling piece verified by Pesoteca.
Related pieces and hubs
Specific questions about this piece
Did Tamaulipas have a Mexican colonial mint?
No, Tamaulipas did not have a colonial mint during the viceroyalty. The active Mexican colonial mints were Mexico City (Mo, the most important), Zacatecas (Zs), Guadalajara (Ga), Guanajuato (Go), Durango (Do), Chihuahua (CH), Oaxaca (Oa, insurgent), San Luis Potosí (Pi, insurgent) and a few others of lower volume. You can see the full catalog in our colonial 8 reales series.
Is there a Cultural 2005 sibling of Tamaulipas?
Banxico issued a second stage of the series in 2005 called Cultural, with the same 32 federal entities but showing a representative iconographic motif instead of the official coat of arms. Check the full 100 Pesos States series for the catalog.
Where can I buy the 100 Pesos Tamaulipas Coat of Arms 2003 today?
The main circuit for pieces in this series is the specialized numismatic market: auction houses, verified stores in the state, and private collectors. In the Tamaulipas store hub we document the local options with honest reviews. For UNC pieces or those with the original Banxico blister pack, the price rises between 3x and 8x the 100-peso face value.
Why did Tamaulipas 2003 (Silver Center): Value & Prices not have a colonial mint?
Tamaulipas 2003 (Silver Center): Value & Prices did not have an operating mint during the Spanish viceroyalty. The active Mexican colonial mints were Mexico City (Mo, the most important and oldest on the continent), Zacatecas (Zs), Guadalajara (Ga), Guanajuato (Go), Durango (Do), Chihuahua (CH), Oaxaca (Oa, insurgent) and San Luis Potosí (Pi, insurgent).
The main reason was economic: mints were only established in regions with enough silver mining output to justify the infrastructure. The silver circulating in Tamaulipas 2003 (Silver Center): Value & Prices during the colonial era came mainly from the central Mexico City mint. That is why this bicolor 100-peso piece from 2003 is the first official coin dedicated specifically to the state.
Key historical event of Tamaulipas 2003 (Silver Center): Value & Prices (1824)
Tamaulipas fue creado como estado en 1824 al establecerse la Federación Mexicana. Su territorio fronterizo con Texas fue disputado durante la Guerra México-Estados Unidos de 1846-1848.
Circulation and market of Tamaulipas 2003 (Silver Center): Value & Prices
Estado fronterizo con Texas. Comercio numismático en Tampico, Ciudad Victoria y Reynosa. Circulación con influencia binacional.
Other denominations from 2003
180 Aniversario de la Unión de los Estados en una Federación · Bimetálica
Same denomination, other years
100 pesos Bimetálica · 180 Aniversario de la Unión de los Estados en una Federación
Frequently asked questions
How much is the 100 Pesos Tamaulipas 2003 worth?
In circulated condition it trades near the melt value of its Sterling silver center, roughly 12 to 18 USD depending on the silver spot price. In uncirculated condition it typically runs about 20 to 40 USD. A high-grade certified example, or one sold as part of the full 32-state set, can bring more.
Is the 100 Pesos Tamaulipas 2003 rare?
No. It is one of 32 common state coins from the Unión de los Estados series, struck in large numbers. Value comes from the genuine Sterling silver center and from collector demand to complete the full 32-coin set, not from scarcity of this single design.
Where can I sell the 100 Pesos Tamaulipas 2003?
The safest options are a verified dealer from the Pesoteca shop directory, who will value it on the spot, or the Pesoteca buy-and-sell forum among collectors. Photograph the obverse, reverse, and edge, and check the value range on this page before selling. Avoid taking the first low offer on social media.
How do I know if my 100 Pesos Tamaulipas 2003 is genuine?
Weigh it (a real coin is 33.78 grams) and measure the diameter (39 mm) with a jewelry scale and calipers. Genuine strikes have sharp relief and a clean silver-to-bronze color line. Fakes usually show the wrong weight or diameter, flat detail, or uneven, bleeding color.
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Sources
Images for informational and educational purposes, attributed to their original source. Reference values; the real price depends on the grade, the specific variant and demand.
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