The obverse design features the Mexican coat of arms, an eagle clutching a snake while it perches on a prickly pear cactus. On the outer periphery is the phrase “ESTADOS UNIDOS MEXICANOS” or as translated to English “United Mexican States”.
The reverse design features a Phrygian Cap with Rays which has long been symbolic of liberty free thinking on coinage. Below the design is a ¾ wreath with denomination “20 CENTAVOS” and date of issue above. In between the denomination is the mint mark “M” for the Mexico City Mint.
During 1919, 20 centavo coinage received a significant change by reducing the diameter from 22 mm to 19 mm:
Type 1 – 1905-1914 Large Diameter 22 mm
Type 2 – 1919-1943 Small Diameter 19 mm
Starting in 1920, the new type 2 coins were slightly modified from 1919 by reducing its silver content from .0932 to .0772 ounces of silver.
Variety 1 - 1919 80% Silver
Variety 2 - 1925-1943 Reduced 72% Silver
|Obverse 1905-19||Obverse 1925-43||Reverse|
General Market Notes
Excluding errors and varieties, the key to the series is the 1908 issue and the semi-key is the 1912 issue.