5 Pesos Carmen Serdán 2009: What It's Worth

If you inherited or found a 2009 Mexican 5 pesos coin featuring Carmen Serdán, here is the honest answer: the ordinary circulated version is worth about 1 to 2 USD, barely above face value. The silver-center proof version in its original Banxico case is worth more, but this is not a coin that makes anyone rich. Below is what actually drives its value in 2026.

What this coin is

This is a bimetallic 5 pesos commemorative struck by Banco de México (Banxico, Mexico's central bank) in 2009. It belongs to a large series honoring the Centennial of the Mexican Revolution. This particular piece portrays Carmen Serdán, a revolutionary from Puebla who took up arms against the Díaz government. Mexico released roughly two dozen designs across the Bicentennial and Centennial program, so most people who own "the 5 pesos with a woman on it" actually own one of many similar coins, not a scarce one.

Specifications (exact figures)

Feature	Detail
Face value	5 pesos
Year	2009
Weight	9.76 g
Diameter	30.52 mm
Edge	Plain (smooth)
Composition (circulation)	Aluminum-bronze ring, cupronickel-style center
Composition (proof)	Aluminum-bronze ring, .925 sterling silver center
Finish	Circulation strike, and proof (encapsulated)

The distinction that matters: the everyday circulation coin has a base-metal center, while the collector proof version has a solid .925 sterling silver center and comes sealed in an official Banxico case.

What it's actually worth

Circulation version: These entered normal use in Mexico. In circulated condition they trade for roughly 1 to 2 USD. A crisp uncirculated example might reach 3 to 5 USD from a collector completing the set. That is the reality for the vast majority of these coins.

Proof version (silver center): The encapsulated proof with the sterling silver center, still in its Banxico packaging, is the one collectors want. Depending on condition and whether the original case and certificate are intact, expect a range of roughly 25 to 60 USD, and more if it is part of a complete boxed set. The silver content gives it a modest floor, but the value here comes mostly from collector demand for the full commemorative series, not from bullion.

There are no record-breaking auction results for this issue. It is a modern commemorative produced in quantity, not a rarity. Anyone telling you a 2009 5 pesos is worth thousands is selling a myth.

The myth to ignore

Social media posts regularly claim these Revolution and Bicentennial 5 pesos coins are "worth a fortune." They are not. The program was minted in the millions across all designs, so scarcity does not apply. The only versions worth a premium are the silver proofs in original packaging, and even those are collector items in the tens of dollars, not investment pieces.

Are there valuable minting errors?

Genuine mint errors (off-center strikes, die rotation, double strikes) can raise the value of any coin if they are real and verifiable. But most "errors" people post online are post-mint damage: dings, corrosion, or scratches from circulation. That is not an error and adds no value. If you think you have a true error, photograph it and get a second opinion before assuming it's worth anything.

How to tell if yours is genuine

1. Weigh it. A jewelry scale should read close to 9.76 g. A meaningful deviation is a red flag.
2. Measure the diameter. Use calipers; it should be 30.52 mm.
3. Check the edge. It should be plain (smooth), not reeded.
4. Inspect the relief. Fakes often show flat, mushy detail and poorly aligned colors between the ring and center.
5. For the proof: verify the case and any certificate are original Banxico issue, and that the silver center has the mirror-like proof finish.

Where to sell it

• A verified coin dealer will appraise it on the spot. Look for one in a reputable shop or a recognized dealer network rather than a random buyer.
• Collector forums and marketplaces let you reach people who actually want the full series, which is where the proof version gets its best price.
• If you have the everyday circulation coin, be realistic: it is worth close to face value, and shipping may cost more than the coin.

Take clear photos of the front, back, and edge before you sell, and know the value range above so you are not lowballed.

Have a 2009 Carmen Serdán 5 pesos or think you spotted a real minting error? Post your photos on the Pesoteca forum and let the community weigh in before you sell.

María del Carmen Serdán Alatriste: Maderista militant and forerunner of the revolutionary uprising

María del Carmen Serdán Alatriste (1873-1948) was a Maderista militant and forerunner of the revolutionary uprising during the Mexican Revolution.

The Serdán siblings (Aquiles, Máximo, and Carmen) were preparing the uprising of November 20, 1910, in Puebla. Betrayed by a police officer, they were surrounded in their home on November 18 of that year. Carmen held the fire alongside her brothers and harangued the neighbors through the window: it is for the freedom of the homeland. The Serdán house is the first recorded combat of the Revolution.

Context of the year. The piece is from 2009 and gives visibility to the women of the Maderista movement. In 1910 the Serdán resistance in Puebla occurred two days before the official date of the Plan de San Luis.

The reverse of the coin. The reverse of this 5 pesos piece shows the portrait of María del Carmen Serdán Alatriste, her engraved signature, and the year 2009, in accordance with the official catalog of the Bank of Mexico for the commemorative series of the Centennial of the start of the Revolution (1910-2010).

Legacy. The Serdán house is today the Regional Museum of the Mexican Revolution in Puebla. Carmen survived the combat and continued her activism in public charity.