DS, in Spanish, one page, 5.75 x 3.75, no date, but circa 1965. Entitled "Sociedad De Amistad Sovietico-Cubano [Cuban-Soviet Friendship Society]," the document reads, in full (translated): "To mark the fourth anniversary of the glorious triumph of the Cuban people in Playa Giron, we send our warm and fraternal greetings. The heroes of Playa Giron will live forever in our hearts. We ardently salute the heroic Cuban people who build socialism and courageously defend the freedom and independence of their homeland." Signed at the conclusion in pink ink by Yuri Gagarin and countersigned by the secretary general. In very fine condition. Encapsulated in a PSA/DNA authentication holder.