Here in germany . For sale Never heard of this conversion before ? https://www.ebay-kleinanzeigen.de/s-anzeige/vw-t2-wohnmobil-oldtimer/532200464-220-20575
Possibly, Bischoff as in Neismann and Bischoff? The fabulous LT50 CLOU liner. The fore runner of the Hymer Clou range.