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1 Peso Pattern, Guerrero Aguila, Uniface, Brass
| Issuer | Casa de Moneda de México |
|---|---|
| Year | 1979 |
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| Composition | Log in to see details |
| Weight | 6.5 g |
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| Obverse description | Uniface pattern die trial featuring the bust of a Mesoamerican eagle warrior (Guerrero Aguila) facing left, rendered in bold relief in the Pre-Columbian artistic tradition. The denomination $1 appears to the left of the effigy, with the date 1979 positioned below. The design is enclosed within a decorative inner border, beyond which a stylized repeating motif — evoking ancient Mesoamerican stepped-fret or serpentine ornamentation — encircles the entire field as a rim embellishment. |
|---|---|
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| Reverse script | Latin |
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| Additional information |
Pattern coinage from the Casa de Moneda de México in this period reflects an aggressive modernization program the mint undertook in the late 1970s, testing new alloys and planchets in anticipation of rationalizing Mexico's fractured circulating series. The uniface strike indicates this was an early-stage die trial — one face impressed, the reverse left blank — used to evaluate relief, metal flow, and die wear characteristics before committing to full production tooling.
The "Guerrero Aguila" designation distinguishes this eagle type from concurrent variants tested in the same program. It never entered circulation.