Mexico 100 Pesos Ferrocarril del Sureste (2012): Value & Facts

If you inherited or found a Mexican 100 Pesos Ferrocarril del Sureste dated 2012, here is the honest answer: this is a modern silver collector coin, not a rare treasure. In 2026 most examples trade in the low tens of dollars, driven mostly by their silver content plus a modest collector premium. Certified high-grade pieces can climb higher.

This coin is not the kind of thing that sells for thousands. It was made in 2026-era numismatic sets, not for pocket change, so it survives in good condition. That keeps prices sensible and predictable.

What this coin actually is

The 100 Pesos Ferrocarril del Sureste belongs to the Herencia Numismática de México series, meaning "Numismatic Heritage of Mexico." This second issue ("II") reproduces the design of the classic 1950 25 Pesos Ferrocarril del Sureste (Southeast Railway), a piece Mexican collectors know well.

The coin carries a matte-and-shine (mate-brillo) finish typical of proof-like collector strikes from the Casa de Moneda de México, the Mexican mint.

Specifications you can verify

Use these numbers as your first authenticity check. If your coin does not weigh close to 33.967 grams or measure 39 mm, treat it with suspicion.

What it is worth in 2026

Value depends on three things: condition, whether you still have the original Banxico blister packaging, and current demand. Because it is a modern silver coin, it has a floor set by its metal content, and a ceiling set by collector interest, which is moderate.

Don't expect a fortune. The realistic story here is a nice silver collectible that holds a dependable value, not a record-breaker. If you have several from an inherited set, the metal content alone gives them a solid base.

For comparison, if you want coins that actually break records, that's a different category. See our guide to the most valuable Mexican coins to understand what real rarity looks like.

How to tell if yours is genuine

1. Weigh it. A digital scale should read close to 33.967 grams. Fakes are usually off.
2. Measure it. Diameter should be 39 mm.
3. Check the relief. Compare the fine detail against official Banxico images. Counterfeits tend to look flat and mushy in the raised areas.
4. Inspect the edge. It should show discontinuous reeding.
5. Certify if it matters. For a coin you plan to sell above a few dollars, grading by NGC or PCGS is the definitive proof of authenticity and grade, and it raises the price a buyer will pay.

Where to sell it

Your best options, in order of safety:

• A verified numismatic shop from the Pesoteca directory, which can appraise and buy on the spot with a fair price.
• The Pesoteca buy-and-sell forum, where you deal directly with collectors who know the series.
• Established coin dealers, which pay slightly less than face-to-face collector sales but offer expert verification.

Before you sell, photograph the front, back, and edge, and check the value range in this page. Avoid dumping it to the first bidder on social media, and never sell without seeing what condition-graded examples are bringing.

Have one of these in a drawer or a full inherited set? Post clear photos of the obverse, reverse, and edge in the Pesoteca forum and we'll help you pin down the grade and a realistic price.

100 pesos silver Herencia Numismática de México series II, 2012, reproduction of the 25 pesos Ferrocarril del Sureste 1950. A piece from the Bank of Mexico's Herencia project dedicated to the 25 pesos issued in 1950 to commemorate the inauguration of the Ferrocarril del Sureste, which connected Mexico City with Mérida overland, crossing the Isthmus of Tehuantepec. It was a single issue in its denomination, released under the presidency of Miguel Alemán Valdés as a celebration of a key infrastructure work of the Alemán regime. The original obverse shows the facade of the Bank of Mexico building and the reverse a locomotive in motion with the legend FERROCARRIL DEL SURESTE. The original issue had a limited mintage and substantial silver content. Official weight of the Herencia reproduction close to 31.10 grams with .999 silver fineness. The matte-brilliant finish combines a satin field with mirror relief. Under the administration of the Bank of Mexico led by Agustín Carstens. Series II included six pieces in 2012. Pieces collectible for documenting in modern format a unique commemorative issue from the cycle of the industrial Mexican Miracle.