1951 a pair of military covers from the 4th Field Army, one stamp off while another f.w. Tienanman For Use in Northeast $2500. Both with
1951 a pair of military covers from the 4th Field Army, one stamp off while another f.w. Tienanman For Use in Northeast $2500. Both with “Concessionary Military Mails” cachet.1951年一對第四野戰軍軍郵封，一件掉票，一件貼天安門圖東北貼用2500元。均鈐“優軍郵件”直戳。
