Auction Series 257-264 in Zurich Day 2

1882: 25 st. deep blue on blue and 50 st. deep blue on pink (2) used on registered 1886 cover addressed to the Grand Vizier, His Highness Kâmil Pasha in Constantinople tied by bilingual SOFIA despatch datestamps (Oct 3) in black. Registration cachet at right and reverse with Stamboul arrival cds (Oct 18g) in black. Top flap partially missing and some edge wear to envelope but a scarce and attractive commercial cover to an unusual destination.
Catalogue 260: Italy, France and European Countries