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 the Aztec Sun Stone also referred to as the Aztec Stone Calendar. Encircling the design is the denomination “VEINTE PESOS”. On the lower outer periphery is the actual gold weight "15 gr ORO PURO" (15 gr Pure Gold).
General Market Notes
There are no rarities in the series and most examples can be acquired for a small premium above current gold bullion prices. As a footnote, according to Krause Publications, from 1960 to 1971 a total of 1,158,414 pieces were re-struck with the date 1959.
For a possible sleeper look for 1920 issues with a 20 over 10 over-strike.