1940, 4 army postal service official letters with postal stamp KIEL-WIK respectively KIEL 1 from 27.2.40, 20.3.40, 10.4.40 and from 26.4.40 as well in each case with cover stamp "free by exemption providing franking privilege Reich" with army postal service no. M 20078 = leader of the mine sweepers organisations east, good condition