CUBA: Specimen of 20 Pesos (1961) in blue on pink unpt with portrait of C Cienfuegos at center. Red diagonal ovpt "SPECIMEN" at center. S/N: "F59 172222". Printed by STC-P (without imprint). Inside holder by PMG "Gem Uncirculated 65 - EPQ". (Pick 97as) & (Spink BNC B20as1).