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20 francs Essai trimétallique de frappe au module de ...
| Issuer | Monnaie de Paris |
|---|---|
| Year | 1987 |
| Type | Coin pattern |
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| Composition | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Latin |
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| Mint | Monnaie de Paris, Paris (and Pessac starting 1973), France (864-date) |
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| Additional information |
The 1987 trimetallic essai was part of the Monnaie de Paris's internal trials exploring multi-ring construction ahead of broader bimetallic adoption in French coinage. Essais of this type were never released for circulation — produced in strictly limited numbers for technical evaluation and collector distribution through the mint's own sales program. GEM 214.8 places this among a documented series of module trials that tested both striking pressure tolerances and bonding integrity across dissimilar alloys.