Otto and I went to take a look at the 2nd known 51 Olympia in the States, not $1500 by our opinion. Pretty rough, real rough, engine in pieces for a least the last 35 years, as it had a 1970 OK tag on it. It appeared that most of the engine was in the trunk, the Rocker panel and the majority of the floor on the right side was gone due to rust. No Back window, but it is just flat glass. Had an old Chevy straight 6 in parts on the back seat and rear floor board, the back of the rear seat was not there or if it was it was some where under the 6 cylinder, most of the relectors, lenses, ect. where there but aged cracked and faded for 50+ years old. The radiator was almost the best feature of the whole car. All the chromed pot metal was most likely beyound repair or at least at the highest end of repair money wise. most of the chrome trim (stainless) was there. Bumpers where rusted but straight. The photos I took of the car are to large to be accepted by the site, so you can PM your email and I can send them out.
For the Record Gary here is the serial number OLY-51-LZ-074221 With the Rusilhiem tag very simular to the 70's era Opel. And for what this is worth since I can't read German "Baujahr 1952" which I think is 'made in' 1952. it has a 1.5 engine(in pcs.) 3 speed. But not for $1500 in my book.