The product is a collection of documents from the Kaiserliche Marine (Imperial Navy) School during World War I, specifically issued to one sailor serving in the German Navy from 1914 to 1918. These certificates and documents provide a unique insight into the training and service of sailors during this tumultuous period in history. With a focus on militaria and the theme of World War I, this collection is a valuable and historical item for collectors and enthusiasts of World War I memorabilia. 1/ Documents/Certificates for one sailor who, was invalided out of the imperial navy in 1917,other documents relate to his early career, starting in 1914, the ausweiss or passbook,is for a trainee sailor or matrose from 1924, from Kopernick which is in East Berlin