1910 Large OHMS cover from Sikkim to S W Laden La, f.w. Indian KEVII ovpt. OnHMS 1a in strip of 4, along with Gangtok R mark. Impresisvev.
1910 Large OHMS cover from Sikkim to S W Laden La, f.w. Indian KEVII ovpt. OnHMS 1a in strip of 4, along with Gangtok R mark. Impresisvev. size 36.5 x 22.5 cm 1910件大型OHMS封寄萊登拉，貼印度愛德華七世加蓋OnHMS 1安娜橫四連，旁見甘托克掛號戳。十分震撼。尺寸 36.5 x 22.5 厘米 。
