United States 1872 6c carmine New York Foreign Mail (TR-M4) Cover to Germany

Cover franked with 6c carmine (Sc. 148), tied by black New York Foreign Mail fancy cancel, struck with red "NEW YORK JUN 18 PAID ALL DIRECT" exchange office datestamp (Winter 237), carried on the NGL Line "New York" with boxed Bremen transit struck on front, Coburg Banhofs-Post EXP (7 72) arrival backstamp, Weiss records seven examples dated between 5/6/1872 and 15/6/1872, this not being among them and a new latest recorded date, a rare cancellation and a desirable usage to Germany, with 2003 Philatelic Foundation certificate, it backstamped as ex-Kirke.