Che Guevara’s personally owned, signed and inscribed Bay of Pigs victory Cuba flagA Che Guevara owned, signed and inscribed Cuba flag, used to celebrate the Bay of Pigs victory. Guevara has signed faintly on a blue portion of the flag (see images). Guevara signed Cuban flags are vanishingly rare. 72 x 36 inches. History The Bay of Pigs Invasion of April 1961 was a failed CIA backed attack to remove Castro from power. The invasion comprised 1,400 US trained Cubans who had fled their homes when Castro took power. Castros troops