Yeah, no mas really, but honesty is always a good policy.
This is a rare bike, and while it may not appeal to the younger crowd, those of us around in the 60's and 70's remember Zundap well. There was some sort of relationship with Steens and Zundap (German) because that Zundap was a cool hotrod upgrade to the Steens MX bike.
A Bonanza with an ACE motor in it will probably do better on the market. But this is still a cool bike, and the right person will get it from you. Instead of messing around here and on CL, (you are after all trying to get the highest bidder) put it on Ebay. Otherwise, let me send you $600 and I'll jump in my truck and be right down to pick it up. :devil2:
Edit: $200.