1880 (June 25), stampless cover to London, prepaid and struck with blue FRANCO straight-line, alongside fine Plovdiv despatch c.d.s. and Constantinople transit (Jul 9), reverse with second transit c.d.s. and London c.d.s. receiver (Jul 14), portion torn from back, clear of postmarks, cover opened on three sides for display, but a scarce usage to a foreign destination, with clearer strikes than often seen.
