1968 'SOVEREIGN BIAFRA' opt 1/2d 'Lions', complete folded sheet of 25 with sheet number '261,505' and dated '2.10.1965' showing opt misplaced to right resulting in broken tail to leopard at right of shield (R1/5), unmounted o.g. (hinged in margins). Minor marks from overprinting ink otherwise fine. A scarce and interesting item. 1740 sheets overprinted, with a low survival rate.