unused Block Larger Than four Hong Kong, 1938-47, 2c-50c Postage Dues (J6-J12, Gibbons D6-D12), blocks of twenty (5 x 4), each showing T.R. sheet margin, few small faults incl. some slightly disturbed o.g., otherwise appear fine-very fine, Scott retail $542.00, Gibbons £900est.