It has a serial number stamped on the frame that begins TD55----. It also has a vintage Haddco jack and a cool cast aluminum hitch release. Not sure of the profile just yet, I'll have to pull the side off and straighten it up before I can get a good handle on the exact shape. It's a 4x8 and still has a sink in the galley area, original light inside, and an electrical inlet up high on the side. Only has one door. Looks like i'll have plenty to do this spring

Ron