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| 正面描述 | 登录 以查看详情 |
|---|---|
| 正面文字 | Latin |
| 正面铭文 | 登录 以查看详情 |
| 背面描述 | Central device features a boldly rendered adult green sea turtle (Chelonia mydas) in high relief, depicted in dynamic swimming posture oriented toward the left, with detailed scute patterning on the carapace and textured scalation on the flippers. To the right, three smaller outline silhouettes of juvenile turtles are shown in diminishing scale, evoking a nesting or hatchling scene. An oval security feature with fine parallel milled lines appears in the lower left field. The large denomination numeral '$6' occupies the upper right field, accompanied by the Mexican Mint monogram 'Mo' below it. Legends in the field read PRUEBA SIN VALOR at upper left, TORTUGA VERDE and the date 2015 at lower left, with the scientific name CHELONIA MYDAS inscribed along the lower margin. |
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| 背面铭文 | 登录 以查看详情 |
| 边缘 | 登录 以查看详情 |
| 铸币厂 | 登录 以查看详情 |
| 铸造量 | 登录 以查看详情 |
| 附加信息 |
The "Tortuga Verde" (green turtle) belongs to a series of pattern pieces struck by the Casa de Moneda de México exploring bimetallic and single-alloy alternatives for proposed higher-denomination circulation coinage that never entered production. These patterns were struck for internal evaluation and select numismatic distribution — not public circulation — making survivor populations small and largely traceable to official or near-official sources.
The brass composition here was one of several alloy trials run against cost and wear projections for the 6-peso denomination, which itself was never adopted into the circulating series.