Nagaland 1974 Butterflies 50c (Silver-Washed Fritillary) set of 7 imperf progressive colour proofs comprising the 4 individual colours plus 2, 3 and all 4-colour composites unmounted mint
Nagaland 1974 Butterflies 50c (Silver-Washed Fritillary) set of 7 imperf progressive colour proofs comprising the 4 individual colours plus 2, 3 and all 4-colour composites unmounted mint