URUGUAY - WATERLOW IMPERF PROOFS 1954 Flowers definitives with 5m Ceibo (National Flower), SG 1028, 3c Passion Flower, SG 1031, and 50c Passion Flower, SG 1039, these all as superb never hinged mint imperf proof blocks of four, each with specimen control punch hole. Colourful and scarce topical display items. (3 blocks of four) (Image1)