perfect answer,that !
It was indeed Jörg Obermosers (team obermoser Jörg)second F2 car ,2 of them were build and Danny Sullivan and Rolf Stommelen should have driven these ,only one car was available for Danny but he failed to qualify.I think they tried 2 or 3 more times ,but no success.1 car was sold to Eugen Grupp he campaigned it in austrian Championship ,th ecar is rumoured to be in Canada now.
Obermoser lives 15km from my place and builds TOJ modelracecars :
http://www.toj-drom.de/
ah the F3 version F302 of that car was slightly more competitive,Peter Scharmann won the german trophy...almost all Obermoser cars carried Warsteiner Sponsorship ..I wonder how Warsteiner came to Arrows in these days...maybe Stommelen..
and to give some further F1 connection :the car is looking quite similar to a Merzario A1 (Kauhsen WK05)as designer was Kurt Chabek