| Location | Mexico |
| Year | 1989 |
| Type | Bullion round |
| Composition | Silver (.9999) |
| Weight | 31.1 g |
| Diameter | |
| Thickness | |
| Shape | Oval |
| Technique | Milled |
| Orientation | Medal alignment ↑↑ |
| Edge | Plain |
| Period | |
| Reference(s) |
| Obverse description | Facade of the plant `Química del Rey` |
| Obverse lettering | QUIMICA DEL REY
`Firma de Grabador LR`
1964 - XXV ANIVERSARIO - 1989 (Translation: QUIMICA DEL REY `Engraver Signature LR` 1964 - XXV ANNIVERSARY - 1989) |
| Obverse script | Latin |
| Reverse description | Peñoles logo |
| Reverse lettering | PEÑOLES
UNA ONZA TROY
PLATA PURA .9999 (Translation: PEÑOLES 1 TROY OZ. PURE SILVER .9999) |
| Reverse script | Latin |
| Mint | |
| Mintage | 1989 - Proof - |
| Catalog ID | 5180272000 |
| Comments |
