1892.3.15 Cover from St Petersburg to Troitskosavsk, arrived 4.15,
on reverse. Hellrigl recorded only 8 covers originated from
1892.3.15 Cover from St Petersburg to Troitskosavsk, arrived 4.15,
on reverse. Hellrigl recorded only 8 covers originated from Kyakhta
prior to 1890. Earliest datestamp of Troitskosavsk, pre-dated
Hellrigl’s record by 2 years!
1892.3.15聖彼得堡寄恰克圖，4.15到達，此戳比韓利格記錄早兩年多！
