US sea mail from approximate 1895 - 1936, over 100 documents the US postal service, duplex cancel with various numbers and without no., cancel with or anonymous the ships and machinery ship cancel, as well the different numbers the US ships also German ships with US post office on the North Atlantic route, various postal stationery card, GSU, picture postcards, registered mail and many further special feature, in this richness rarely offered (former starting price 1000)