KATHIRI STATE OF SEIYUN 1966 (MNH) 5F/5C SULTAN HUSSEIN PLATE 1 BLOCK, BLACK OVERPRINT
5f/5c Sultan Hussein plate 1 block x 4 with surcharge and overprint in black rather than blue. Scarce. Only a handful of sheets reported to exist. Fresh and fine. Mint never hinged. Includes copy of Alex Rendon certificate of authenticity for sheet numbered 3956 from which this block emanates. SG55var; Mi55var
