Tuvalu 1985 John Audubon Birds (Leaders of the World) 25c set of 7 imperf progressive proof pairs comprising the 4 individual colours plus 2, 3 and all 4 colour composites mounted on special Format International cards (7 se-tenant proof pairs as SG 303a)
Tuvalu 1985 John Audubon Birds (Leaders of the World) 25c set of 7 imperf progressive proof pairs comprising the 4 individual colours plus 2, 3 and all 4 colour composites mounted on special Format International cards (7 se-tenant proof pairs as SG 303a)