North Korea 1992 Monument & West Sea Barrage 1w20 (from 80th Birthday set) unmounted mint, SG N3136
North Korea 1992 Monument & West Sea Barrage 1w20 (from 80th Birthday set) unmounted mint, SG N3136
North Korea 1992 Monument & West Sea Barrage 1w20 (from 80th Birthday set) unmounted mint, SG N3136