1943 / 44, Navy, 4 army postal service covers the army postal service no. M 30808 = minehunter "M 12" the 2. Mine search flotilla and 2 army postal service covers the army postal service no. M 55298 = Barrier weapons testing Kdo. As well 1 army postal service letter the army postal service no. M 23860 = minehunter "M 32" near the Barrier weapons testing Kdo, legitimate condition