Burma. 1941. Air Mail envelope written from the '2nd Derajat Mountain Battery (Frontier Force), Taunggyi, Shan State' dated May 30th 1941' addressed to England bearing Burma 30, 1r purple and blue tied by Experimental P.O. (R-I) date stamp '1st June 41' . Scarce item from Taunggyi Southern Shan State. Not recorded in Proud's book. Ex Proud.