Niger_1981_Yvert_537-Scott_545_pair_a

Niger_1981_Yvert_537-Scott_545_pair_b

Niger_1981_Yvert_545-Scott_553

Niger_1981_Yvert_545-Scott_553_pair

Niger_1981_Yvert_546-Scott_188_full_sheet

Niger_1984_Yvert_650-Scott_663_five

Niger_1985_Yvert_684-Scott_698_five

Niger_1985_Yvert_684-Scott_698_pair