The 1978–1980 1 oz Mexico Silver Onza Scale – AU+ is a distinctive early bullion issue that bridges the gap between traditional coinage and modern silver investment pieces. Struck by the historic Casa de Moneda de México, this Onza stands out for its precise weight-based denomination and symbolic design. In About Uncirculated Plus (AU+) condition, it retains strong detail and appealing surfaces, making it an excellent choice for both collectors and silver investors seeking something beyond standard bullion rounds.
Key Features:
- Purity and Weight: .925 silver, 33.625 grams total weight (1 troy ounce of pure silver)
- Metal Type: Silver
- Obverse Design: Depiction of a mechanical coining press with “CASA DE MONEDA DE MEXICO” and date
- Reverse Design: Scales of justice with inscriptions “UNA ONZA TROY DE PLATA PURA,” along with purity and weight details
The reverse design centers on a finely engraved balance scale, a powerful symbol of precision and fairness. This imagery reflects the coin’s defining feature—its exact silver content. Surrounding the scale is the inscription “UNA ONZA TROY DE PLATA PURA,” clearly stating that the piece contains one full troy ounce of pure silver. Supporting details such as “LEY .925” and “PESO 33.625 GRAMOS” reinforce its composition and total weight, offering a transparent and informative presentation that sets it apart from many bullion issues.
On the obverse, a traditional coining press is depicted, representing the craftsmanship and heritage of the Mexican Mint. The inscription “CASA DE MONEDA DE MEXICO” curves along the rim, honoring one of the oldest minting institutions in the Western Hemisphere. The date, ranging from 1978 to 1980 for this type, marks a transitional period when silver coinage was evolving toward modern bullion formats.
With a classic round shape, reeded edge, and business strike finish, this Onza carries a solid and satisfying presence. Its AU+ condition indicates only light circulation, preserving much of the original detail while adding a subtle character from gentle handling. Unlike many contemporary silver coins struck in .999 purity, this piece uses sterling silver, reflecting the minting standards of its era and enhancing its historical appeal.
The 1978–1980 Mexico Silver Onza Scale is more than just a silver coin—it is a meaningful representation of precision, heritage, and early bullion innovation. Whether you’re expanding a world coin collection or diversifying your silver holdings, this AU+ example offers both authenticity and lasting value. Secure this unique Onza today and add a piece of Mexican minting history to your collection.




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