It's a 5.2 kW Thermo Top C. I.. umm.. "digitally enhanced" one of the pictures for you. Mostly it helped that I knew what to look for in the label, but I also leaned on a nice clean picture from eBay
, which also happened to have the label in English rather than German, to work out some of the details.
That one on eBay has part number 89073P. I can make out 073 on your label, but overall I think your part number may be 89073N.
I'll leave the extraction of the serial number as an exercise to the reader.