Ship / -post, approximate 1900-1940, world, lot from approximate 50 covers, cards, picture postcards, postal stationery, all suitably on the subject of, as well various stamp including on board confirmation mark, imperial navy stamp, "ship Austria" from 1939, KdF steamer "Oceana" Italy trips, , German sea mail, Grace Under Fire Line, Lake Constance shipmail, and so on, treasure trove