| Issuer | Mexico |
| Year | 1909 |
| Type | Coin pattern |
| Value | 1 Peso (1 MXP) |
| Currency | Peso (1863-1992) |
| Composition | Silver (.903) |
| Weight | 27.07 g |
| Dimensions | 39 mm |
| Thickness | 3.4 mm |
| Shape and Technique | Round Milled |
| Orientation | Coin alignment ↑↓ |
| Engraver(s) | Ch. Pillet |
| In circulation to | |
| Reference(s) | KM#Pn183, PL#03B |
| Obverse description | Issuer`s name above its coat of arms, with value divided at base of cactus, and the word ESSAI near eagle`s left wing tip. |
| Obverse script | Latin |
| Obverse lettering | ESTADOS UNIDOS MEXICANOS
ESSAI
UN PESO (Translation: United Mexican States Essai One Peso) |
| Reverse description | Liberty riding a horse. On her right hand an oak branch and on her left a flaming torch, with the sun raising on the horizon. The assayer`s name near left rim, the word ESSAI near right rim, and date at bottom. |
| Reverse script | Latin |
| Reverse lettering | ESSAI
CH. PIllEt
•1909• (Translation: Charles Pillet Trial 1909) |
| Edge | Smooth with raised lettering. |
| Mint | |
| Mintage | 1909 Mo - Matte - |
| Catalog ID | 4339315350 |
| Comments |
