Dhufar 1974 Cats 25b (Short Haired White & Black) set of 5 imperf progressive colour proofs comprising 3 individual colours (red, blue & yellow) plus 3 and all 4-colour composites unmounted mint
Dhufar 1974 Cats 25b (Short Haired White & Black) set of 5 imperf progressive colour proofs comprising 3 individual colours (red, blue & yellow) plus 3 and all 4-colour composites unmounted mint