I have in my shop an old BOMAG ? plate tamper that has been sitting around for many years that the museum can have for free if you want it . It was given to me because it wouldn't start. Seemed to have low compression so I pulled the head off. Valves were a little questionable, and the coil wire had been taped up. It's been sitting ever since , apart , and I don't need it. Might not cost to much to fix or it might be easier to just buy a new engine for it. Believe it has a 5hp Robin engine on it. I'll check to confirm this.
I'm located in Bohemia, LI, NY if the museum is interested.
Nyle