Air Mail unused  -- ditto "FLUGPOST" 4k. grey mint. Fine. Signed twice. S.G. 93; £750. Photo
Air Mail unused -- ditto "FLUGPOST" 4k. grey mint. Fine. Signed twice. S.G. 93; £750. Photo

Details
Air Mail unused -- ditto "FLUGPOST" 4k. grey mint. Fine. Signed twice. S.G. 93; £750. Photo