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1 Onza Pattern, Troy, Proof
| Issuer | Casa de Moneda de México (Mexican Mint) |
|---|---|
| Year | 1978 |
| Type | Coin pattern |
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| Composition | Log in to see details |
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| Diameter | Log in to see details |
| Thickness | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Log in to see details |
| Obverse lettering | Log in to see details |
| Reverse description | Log in to see details |
| Reverse script | Latin |
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| Edge | Log in to see details |
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| Mintage | 1978 Mo - Proof |
| Additional information |
The 1978 troy ounce silver pattern was struck by the Mexican Mint as a proposed bullion coinage format, part of broader institutional experimentation with silver investment vehicles during a decade when Mexico was actively reconsidering how to monetize its enormous silver production. The onza series that eventually entered circulation drew directly from this pattern work, making pieces like this functional prototypes rather than vanity strikes.
Proof finish on a pattern is unusual enough to suggest this was prepared for official presentation — likely to Banco de México evaluators or government treasury officials weighing the proposal.