unused 1897 (Jan.) overprinted "British/East/Africa" on Zanzibar, ½a. to 7½a. set of six; two values with a tiny thin spot otherwise fresh and fine mint. S.G. 80-85, £300

Details
unused 1897 (Jan.) overprinted "British/East/Africa" on Zanzibar, ½a. to 7½a. set of six; two values with a tiny thin spot otherwise fresh and fine mint. S.G. 80-85, £300