unused Zanzibar, Postage Dues, 1931, 32 unused stamps in seven blocks of four and two pairs (separated block of 15c), one stamp on each shows 'Cent.s' error, comprising 3c, 9c, 18c, 20c, 21c, 31c, 50c, some faults, many appear fine-very fineGibbons £438est.