DONAR DN-28643 JC 12V-50W SP Halogen Light Bulb Wild 50, WILD50, Leica 38643/M655 WI38463 HLX4643 Microscope Lamp with a assembly base and T3.5 shape; used in Leitz/Leica/Wild,
Alternative part number WI13808; 4643HLX 384-643 Wild 384-643 Medical Microscope, WILD M650; M690 Leica 38643/M655 WI38463 HLX4643