Palestine / Cilicia 1920 Bozanti (Pouzanti) Envelope Censored Sent to Thun Switzerland Bearing 2Milliemes Block of Five Adhesives SG6 Tied with Coles & Walker Type 186 Date-stamp with Rarity of 20 & Adjacent Adana Transit Cancel; Noting “CONTROLE / POSTAL / BOZANTI” Censor Hand-stamp on Reverse; BOZANTI  Prison Camp Was Located in South Central Anatolia, 38 Miles Northwest of Adana; Turks Had Assigned Allied Prisoners to Work in Labor Detachments Constructing a Railroad Line through the Cilician Gates, which Provided Passage through the Bulgar Daglari, a Range in the Tarsus Mountains. The Cilician Gates Were a Strategic Pass & a Critical Link for the Berlin to Baghdad Railway line. Rear Flap Identifies Sender as Associated with the Construction on the Baghdad Railway; VERY RARE & FINE / VERY FINE (5-15895)