1923 / 41, Navy, 8 covers respectively official letters from and at navy multiples respectively navy member and a postcard with value stamp 3 Pf Hindenburg with additional imprint sail training ship "Gorch Fock" with text SEEGELTUNG / WELTGELTUNG educational campaign for the ideas of the German prestige at sea in the district Berlin May June 1941 with unmailed special stamp BERLIN-STEGLITZ 8.6.1941 SEEGELTUNG / WELTGELTUNG, legitimate condition