Pabay 1971 Cats 15p on 5s (Abyssinian) imperf m/sheet overprinted 'Emergency Strike Post, International Mail' with Pabay obliterated, unmounted mint
Pabay 1971 Cats 15p on 5s (Abyssinian) imperf m/sheet overprinted 'Emergency Strike Post, International Mail' with Pabay obliterated, unmounted mint