I'm not an expert on the matter, but I think that's a Richartz Pocket Knife 7, or something very similar.
EDIT: Possibly a model 6261
EDIT again: I'm not a German speaker, so I can only go by pictures, and I can't find this exact tool combination and scale type. Right now, Richartz puts out this line, made in Solingen. There are certain model designators
like 'Optima' and 'Ultima'.
Here's a link to the Ultima Maxi 7 knife, with the same toolset as yours, but with corkscrew instead of philips.
http://www.panik-design.com/acatalog/Richartz_-_Ultima_Maxi_7_Pocket_Knife.htmlFelinevet sells these Richartz knives on his site from time to time, and i don't think he'd have them listed if they were junk.