PAKISTAN BAHAWALPUR 1949 UPU set of 4 to 2½a Officials, SGO28/31Pakistan Bahawalpur 1949 Anniversary of Universal Postal Union set of 4 to 2a Officials, in complete IMPERFORATE sheets of 50 (5x10), each with plate numbers '1A 1A' (except 1a '1B 1B') and imprint at foot, SGO28 31. Fine quality entire unmounted mint sheets with full original gum. Odd minor wrinkles, as to be expected, which do not detract. Very rare sheets in this form including 9p black and green, 1a black and magenta, 1a black and orange and 2a