black datestamp with matching star cancellation tying 1873 3c Green (158) to 3c Green entire to Prague, Bohemia, cornercard for "Novelty Weaving & Braiding Works", endorsed "first steamer to Europe", red "New York Br. Transit Aug 10" exchange datestamp, carried by Guion Line's Dakota arriving Queenstown August 19, backstamped Prague August 24, very fine, 6c franking overpays the UPU 5c rate which went into effect July 1, 1875, prior to that date this letter would have cost 6c