Bernera 1996 'Phila-Seoul' Stamp Exhibition imperf m/sheet, the set of 7 progressive proofs comprising the 4 individual colours, plus 2, 3 and all 4-colour composite, unmounted mint
Bernera 1996 'Phila-Seoul' Stamp Exhibition imperf m/sheet, the set of 7 progressive proofs comprising the 4 individual colours, plus 2, 3 and all 4-colour composite, unmounted mint