1919-20 FIELD POST comp. 6 pcs of entires FP, 3x letter, 3x postcard, interesting military unit postmark., i.a. Headquarters Czechosl. field hospital No.12, Czechosl. combination infantry reg. No. 107, 3. battery Czechosl. regiment field artillery No.6, Nákladní car convoy 500 etc..; good condition