1915-1917 a group of 3 postcards from Buryatia and Kalmykia, frankless or f.w. Coat of Arms singles, tied by TPO No. 257, Troitskosavsk or
1915-1917 a group of 3 postcards from Buryatia and Kalmykia, frankless or f.w. Coat of Arms singles, tied by TPO No. 257, Troitskosavsk or Ryn-Peski cds.1915至1917年一組三件出自布里亞特及卡爾梅克之明信片,無貼票或貼軍徽圖票單枚,鈐火車郵局257號、恰克圖或Ryn-Peski日戳。