NIGER COMP. TERRS SGZ59 2 1/2d purple/blue tied by type 6 violet ds (seriffed capitals)

1899 (27 JUN) cover from Burutu to Lyon France endorsed Via Liverpool and franked by Great Britain 2 1/2d purple/blue tied by type 6 violet ds (seriffed capitals). Arrival backstamp of 23 JUL 99 . Stamp with crease and minor toning still a neat and scarce cover. Purchased from Stanley Gibbons (still on their card)