Auction Series 257-264 in Zurich Day 4

Turkish Steamship Company 1859/61: Cover fronts (7) and one full cover from Constantinople to Brousse each with "Porto Piastre" black on white labels rated between '1½' and '4' piastres in pencil with fine framed 'P-Anchor-P' handstamps in black adjacent; from known correspondences Glavany, Terraneo (Sardinian Vice Consul at Brousse); also a small piece with French Paquebot CARMEL cds (Jan 29, 1859) in combination with large circular COSTANTINOPOLI POSTA DEI PIROSCAFI OTTOMANI / P.P. Scarce and generally fine group.
Catalogue 261: Stamp Issuing Steamship Companies