I got it on a trade with the remote throttle control.  He said it ran 3 years ago, the paint is very scratched up.  There is some rust in the engine on the starter motor, but everything spins freely.  The data plate is gone, but it is an early 70s motor.

I want to sell it as is. What should I ask?  What should I take?  thanks for you opinions....

Put it on a stand, hook up the muffs and crank 'er over.  I wouldn't give you $50 if I you couldn't tell me whether it ran or not.

If you can get it running, you can probably get $200 or so on ebay. as is - $100 if your lucky and find someone that needs it to part out.