Burundi 528-530, C264-C266 ad blocks imperf

Burundi 528-530, C264-C266 ad blocks imperf, MNH, $55.00. Michel 1399B-1422B. UN, 25th Ann. in 1976. UN stamps and Security Council Chamber, General Assembly, interior, Meeting Hall, Buildings by night, View od Manhattan, Buildings by day. 1977.