This is a certified proof of a twenty-peso silver certificate, prepared in 1936. The obverse depicts Cuban general Antonio Maceo Grajales, with the engraved signatures of Ricardo Ponce (Secretary of the Treasury) and José Agripino Barnet (President of the Republic). The reverse, printed in olive green, bears the Cuban coat of arms. This proof is part of the National Numismatic Collection at the Smithsonian Institution's National Museum of American History.
Other denominations: Banknote design credit: Bureau of Engraving and Printing; engraved by Elie Loizeaux; photographed by Andrew Shiva