O) 1976 circa, NIGERIA, ALEXANDER GRAHAM BELL, FIRTS TELEPHONE CALL , AIRMAIL TO USA
O) NIGERIA, CATTLE RANCHING, CIRCULATED TO HOLLAND
O) NIGERIA, LEOPARDS YANKARI GAME RESERVE, CIRCULATED AIRMAIL TO USA
SB) 1990 NIGER, ABAK, POSTAL SERVICE EMS SPEEDPOST, CIRCULATED TO USA