When was the Estados Unidos Type 1 100 Pesos minted?

The Estados Unidos Type 1 100 Pesos was minted by Mexico from 1977 to 1979.

What is the Estados Unidos Type 1 100 Pesos made of?

The Estados Unidos Type 1 100 Pesos is made of silver (.720) (copper .280), weighs 27.78 grams, and measures 39 mm in diameter.

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Spanning 1977 to 1979, the Estados Unidos Type 1 100 Pesos catalog contains 3 year-and-mintmark variants.

Eagle on cactus eating snake, emblem of Mexico, with legend above

Morelos facing forward with denomination at left, date at right, and silver purity and weight below.

When was the Estados Unidos Type 1 100 Pesos minted?: The Estados Unidos Type 1 100 Pesos was minted by Mexico from 1977 to 1979.
What is the Estados Unidos Type 1 100 Pesos made of?: The Estados Unidos Type 1 100 Pesos is made of silver (.720) (copper .280), weighs 27.78 grams, and measures 39 mm in diameter.

Composition and specification data provided by Numista