Staffa 1974 Water Birds #01 Pochard 10p set of 7 imperf progressive colour proofs comprising the 4 individual colours plus 2, 3 and all 4-colour composites unmounted mint
Staffa 1974 Water Birds #01 Pochard 10p set of 7 imperf progressive colour proofs comprising the 4 individual colours plus 2, 3 and all 4-colour composites unmounted mint