Corinphila Auction 284-290 Day 3

1854: India ½ a. deep blue, Die III, a used block of four with clear to large margins all round, positions 50-51/58-59 on the sheet with position 51 showinga prominent white flaw under upper right corner cross, neatly cancelled by four strikes of the Aden "124" numeral obliterator of the Indian Post Office in black Gi = £ 800+.