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 States of Mexico”.
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 – 1919-1935 Small Diameter 19 mm
General Market Notes
The key to the series is the 1908 issue and the semi-key is the 1912 issue.