1950s a group of 5 PLA military covers from Tibet, Tsinghai and Yunnan, all applied with Chinese Military PO cds.
1950s a group of 5 PLA military covers from Tibet, Tsinghai and Yunnan, all applied with Chinese Military PO cds.1950年代一組五件出自西藏、青海及雲南之解放軍軍郵封，均鈐不同號碼之中國軍郵日戳。
