I was contacted about this car and was told a different story. This is not a factory built car. See if you can get a picture of the cowl tag or pictures of any documents. An under hood shot would be cool also.
They told me that it was documented by GM to be one of two. I did not tell them but I have the Oldsmobile production paperwork for these cars and this car was never made. This paperwork was only discovered a year ago and is the ONLY source for production figures. Even a one off car would show up on this paperwork.
Are you looking to buy this car? Who actually owns it now? I will be on vacation next summer near where this car is located and would like to look at it if possible even though I am not interested in buying it.
All that being said, It does have some value as oaklyss said. Just a matter of how much body work has been done and its driving condition. I can see what looks to be red paint on the front inner fender, if so it has been painted before. For sure the interior is custom and not factory. From what I see I would also say $10K but maybe a little more if it still runs and drives nice. With it not being a factory car, it helps that someone converted it to a 4 speed. It has an automatic console in it so I am assuming it was a conversion.
Keep us posted about the car