Los-Nr. 3734

1901, Railway 2 c. black and carmine tied by "Buffalo N.Y. Pan American Exposition Jun/10 1901" to envelope, via New York transit on reverse to Constantinople Turkey, at arrival postage due black on red 20 pa. und 1 pia. affixed and tied by oval "STAMBOUL" in bars cancellation, shortened on left, scarce destination and very unusual attractive mix for this popular issue. (Michel TR P24-P25)