Just so you know…The ski bike was built from a prewar Cleveland Welding frame and springer. The frame is the straight stay/curved down tube version of the 3-Gill which is one of the less common versions (4 versions) of the prewar 3-Gill frame. This version turns up but was never pictured in CWC literature. The frame dates to 1940-1942 and the serial number could narrow that down further but it looks like that was sacrificed to the BB weld.
It looks like the springer could be unbolted from the assembly but, in my opinion, the frame isn’t rare enough to cut and grind out of the rear ski carriage and the whole thing is probably cooler as it sits than it would be returned to the wheel world. In fact, that gives me some ideas for my extra Supreme frame…