Oman 1972 Butterflies (opt'd Post Day) imperf set of 8 values (1b to 20b) unmounted mint
Oman 1972 Butterflies (opt'd Post Day) imperf set of 8 values (1b to 20b) unmounted mint
Oman 1972 Butterflies (opt'd Post Day) imperf set of 8 values (1b to 20b) unmounted mint