Last night, I testen my post-war model 835.As you can see , it differs from the pre-war model in a few of details.None of my other lamps run so consistently for hours on end without requiring any Intervention- it's almost boring Perhaps Mr. @Jörg Wekenmann can provide more specific details regarding the production date and location of this perfect "donut" lamp ?
Would love to find one of these at an affordable price! How have you got it hung? Is that some kind of gantry?
