North Korea 1993 Insects 20ch value (Fly) set of 4 imperf progressive proofs comprising the 4 individual colours (magenta, yellow, blue & black) as SG N3268
North Korea 1993 Insects 20ch value (Fly) set of 4 imperf progressive proofs comprising the 4 individual colours (magenta, yellow, blue & black) as SG N3268