The bike is back in Michigan in storage. I might be able to get my mom to run out back and take a look for me. Would the number be under the frame on this bike?
Also, you mentioned this bike being a tank bike. Were there less "deluxe" models sold without the tank? Or would this have definitely had the tank?
I bought some truss rods, and also picked up an old WF rear rack. What else do you see that might be missing? I wondered about a headlight, etc...