ca 1866 a group of 3 covers from India to British military officers in Dewangiri, all f.w. Indian QV single, tied by obliterator or pen
ca 1866 a group of 3 covers from India to British military officers in Dewangiri, all f.w. Indian QV single, tied by obliterator or pen strokes. In 1864, the British attacked Bhutan from Bengal and Assam. In 1865, the British dictated the treaty terms by which Bhutan had to cede all 18 mountain passes bordering India and put Kalimpong under British rule.約1866年一組三件印度寄駐德旺吉利之英軍軍官信封，貼印度維多利亞女皇像單枚，銷殺手戳或以筆劃銷。1836年，英印從孟加拉及阿薩姆兩路進擊不丹。隨後跟據1865年和約，不丹交出與印度交界的18個山口，包括德旺吉利，並割讓噶倫堡予英國。
