Courland express letter, used with halved Michel-no. 4 - in that case left half, sender adress fieldpost number 57169 which member of the 1.-4. Kp. Field replacement Batallion 225 subordinate to the 225. infantry division, these was in the region the 18. Army in Courland stations, slightly having mould stains and cleaned - otherwise in a for this issue good condition, photo expertize van Loo BPP, Michel 2.000.- - rare! These folded letters served only in the March / April 1945 to the contingent maintenance of the field post traffic through airmail from the Cure country-boiler in the up to then not yet occupied area Germany's, historical very interesting document!