Lot 2492

1910 Cover back of an incoming mail to Gyantse, applied with extremely scarce FPO No. 81 type B1 (23 Jan) cds. Dated later than the record in "Tibet Stamps and Postal History".

1910年寄江孜之進口封封背，鈐極罕之軍郵81局B1型日戳（1月23日）。比《青康藏郵驛史》之記錄日期更晚。