Los-Nr. 1066

1880 (January 16), prepaid stampless cover to Constantinople, struck with blue Plovdiv c.d.s., straight-line FRANCO in blue below, with c.d.s. arrival backstamp (Jan 31), opening tear to back flap and some light creasing, else fine.

Note: responsibility for civil mails passed to Eastern Rumelian authorities in mid-1879, though adhesive stamps were not available until late 1880.