Hello,
I had a great difficult in finding a replacement for this item. I had to use my best workmanship to fix the old one (using screws and sika) because I could not find a replacment. But I discovered it later. "Abat-jour" is the French keyword if you want to google. Actually the piece is Osculati part number 13.440.03. Tip: put Vaseline in the contacts of the abat-jour and on its receptacle in order to avoid bad connection!
Regards, Luis