A collection of 5 early official covers from Russian to Urga, frankless as dated before the issuance of postage stamps. Very scarce early
A collection of 5 early official covers from Russian to Urga, frankless as dated before the issuance of postage stamps. Very scarce early mails to Mongolia, probably the oldest.一組五件早期俄國寄庫倫封，無貼票，日期為郵票發行之前。非常難得稀罕，可能為俄國寄蒙古之最早郵件。
