Tanganyika
Covers and stamps / Tanganyika / Postal Stationery / Giraffe
1925 30c, size H, ‘Giraffe’ registration envelope diagonally overprinted SPECIMEN on reverse, front bearing archival 1926 at top; central vertical crease
1925 30c, size H, ‘Giraffe’ registration envelope diagonally overprinted SPECIMEN on reverse, front bearing archival 1926 at top; central vertical crease