1940, 4 army postal service official letters: from 2.1.40 with army postal service no. 20249 = torpedo boat "albatross", from 3.3.40 with army postal service no. 17028 = torpedo boat "leopard", from 24.4.40 with army postal service no. 01097 = torpedo boat "polecat" and from 1.6.40 with army postal service no. 05689 = torpedo boat "condor", mainly good condition