El Chicano Azteca, Sapo, a benefit concert for the farmer workers of America! Historic Artwork 50 years old original poster from Ruben Guzman San Francisco Chicano Artist, size is 14 1/2"× 23 1/4" poster looks good for it's age, never framed or exposed to light, been kept in flat secure storage! See pictures for reference! This Poster is part of American San Francisco Chicano History! Do you research! No international shipping, shipping only within the USA!