Guernsey - Alderney 1967 Aircraft - 3s Viscount imperf proofs comprising the central vignette in blue and the frame in vermilion, both unmounted mint as Rosen CSA 81
Guernsey - Alderney 1967 Aircraft - 3s Viscount imperf proofs comprising the central vignette in blue and the frame in vermilion, both unmounted mint as Rosen CSA 81