Casa de Moneda de México Medal. San Luis Plant (1983)

This medal celebrates the San Luis Potosí plant of the Casa de Moneda de México, the oldest mint on the continent, founded in 1535. During the 20th century, the institution moved and expanded much of its production outside Mexico City, and the Potosí plant became a key part of that industrial modernization.

From there came millions of circulating coins and numerous commemorative issues, consolidating San Luis Potosí as the manufacturing seat of national minting.

Worked in silver and of good module, this version is more luxurious than its brass counterparts, and was intended for collectors and for institutional gifts that would leave a record of the milestone.

The "Casa de Moneda de México. Planta San Luis" medal was struck in 1983. It is made of silver, measures 50 mm in diameter and weighs 42.27 grams, minted in Mexico.

Since it is a silver medal, its value has a floor: the precious-metal content (42.27 grams). Above that, what drives it up is condition, how short the issue was, and interest in the subject it commemorates (Casa de Moneda de México. Planta San Luis). A piece with no wear and its original case is worth quite a bit more than a mishandled one.

How to identify and value this medal

1. Confirm the metal. It is silver; weigh it to estimate its fine-metal content.
2. Read the legend and the motif. It commemorates "Casa de Moneda de México. Planta San Luis," which defines its historical interest.
3. Check the condition. No scratches or harsh cleaning, with natural patina.
4. Look for the case and certificate if it ever had them: they add collector value.

Explore more pieces in the Mexican numismatics catalog and learn to read the marks in the guide on how to identify Mexican mints.