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| 背面描述 | A right-facing portrait bust of Vicente Guerrero, hero of Mexican independence, is centered in the field, rendered in a formal medallic style with fine engraved detail. The date 1972 appears to the left of the portrait, while the denomination legend is positioned above. The mint mark 'Mo' designating the Mexico City Mint appears in the lower portion of the reverse field. |
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| 铸币厂 | (Mº) Mexican Mint (Casa de Moneda de México), Mexico City, Mexico (1535-date) |
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| 附加信息 |
Pattern coinage from the Casa de Moneda rarely escapes institutional archives, and this brass 1972 piece is no exception — struck as part of a broader mid-century effort by the Mexican mint to evaluate alternative compositions for high-denomination circulation coinage. Brass was being tested against rising silver prices that had already forced Mexico to abandon silver in its peso series years earlier.
Guerrero patterns from this period exist in multiple metals, making cross-reference against Pollock essential before attribution. PL#161 is brass specifically.