I believe it's an E4 also, no model # on the head but it has reference on the column to "E3-E4".... The artist I bought it from is looking for the manual he thinks he has..."somewhere" .... He thinks it's an E4 .. Pretty complete, all in all, condensers, carriers with and without glass, 50 to 190 lenses, cold light unit, blah,blah.... All I need to do is "carve out" some space. I have a small bldg with my instrument making shop in it, but there is no controlling the dust.Have everything else, Leitz Valloy ll, & 1C plus my fathers D2, 7ft sink many trays and tanks, bottles and lights, etc. Can't wait... Bill