cover Dum Dum: 1845 (6 Dec.) entire letter written from French Rocks to an Officer with the Bengal Artillery at Dum Dum, showing a fine strike of the rare boxed "D.D.P.O." h.s. of the military handover point to the civil P.O. (HG3) also boxed "DUMDUM/date/Bearing" (HG5) and "MADRAS/SHIP LETTER/Bearing" d.s. (HG SR3). An exceptional item of Indian prephilately. Photo