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Design features
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Type |
C |
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Diameter |
22.0 mm (circle around a dodecagon) |
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Shape |
12-sided, notched |
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Weight |
4.39 grams |
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Edge |
Plain |
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Front |
In the center, the National Shield in sculpted relief, with the inscription “ESTADOS UNIDOS MEXICANOS” (UNITED MEXICAN STATES) forming a semicircle above it. |
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Back |
In the middle part of the coin, the number fifty, “50,” as the key motif and denoting face value; to its right the cent symbol “¢”; top center, the mint year; below the center, Mexican mint mark “M”; parallel to the semi-circular frame, at the bottom, a stylized image of the “Ring of Acceptance of the Sun Stone.” |
Composition
Bronze-aluminum alloy comprised of the following materials:
- 92% (ninety-two percent) copper;
- 6% (six percent) aluminium; and
- 2% (two percent) nickel.
Design features
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Type |
D |
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Diameter |
17 mm |
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Shape |
Round |
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Weight |
3.103 grams |
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Edge |
Milled |
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Front |
In the center, the National Shield in sculpted relief, with the inscription “ESTADOS UNIDOS MEXICANOS” (UNITED MEXICAN STATES) forming a semicircle above it. |
|
Back |
In the middle part of the coin, the number fifty, “50,” as the key motif and denoting face value; to its right the cent symbol “¢”; top center, the mint year; below the center, the Mexican mint mark “M”; parallel to the edge, at the bottom, a stylized image of the “Ring of Acceptance of the Sun Stone.” |
Composition
Stainless steel alloy comprised of the following materials:
- Between 16% and 18% (sixteen and eighteen percent) chrome;
- 0.75% (seventy-five basis points) nickel, maximum;
- 0.12% (twelve basis points) carbon, maximum;
- 1% (one percent) silicon, maximum;
- 1% (one percent) manganese, maximum;
- 0.03% (three basis points) sulfur, maximum;
- 0.04% (four basis points) phosphorus, maximum; and
- The remainder, iron.
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