1897, heavily international registered cover IBURG 10.2.97 with 10 and 50 Pfg crown / eagle to Neumünster, North America (?),? Transit on the reverse side with sea mail oval DASP BREMEN - NEW YORK, in USA undeliverable, because the city there not exists, various DLO cancel and note on both sides, transits from December 1897 and January 1899 and last of all returned to Iburg with arrival 20.2.98, over after a year, accordingly custom traces