ADEN 1957 (MLH) 20S ADEN IN 1572 PLATE 1–1 BLOCK, BLACK AND DEEP LILAC
20s Aden in 1572 plate 1–1 block x 4 printed by Waterlow in black and deep lilac, perf 13½ x 13. Very scarce. Fresh and fine. Mint lightly hinged in the lower margin only. SG72; SC61