cover 1943 unfranked envelope from Ipoh to Kuala Kangsar bearing, on reverse, 1c. slate-purple handstamped in red and "DAI NIPPON" 3c. green, both tied by light "KUALA KANGSAR" double-ring d.s. (Type D11) and framed "CHARGE NOT COLLECTED/FRESH LABEL REQUIRED" h.s. (Type I3) in violet. Scarce and attractive. Photo