UPDATE: **SOLD** Was on eBay.
Josh has listed this crankshaft pulley, a part used to power some early Ramsey winches. This video tells more about Ramsey’s crankshaft driven winches:
“You are bidding on a nearly impossible to find positive crank shaft driven winch/pto CLUTCH PULLEY. I believe this example was manufactured by Ramsey and is the key piece for a number of winches used on vintage jeeps.
The assembly appears in good shape and complete but could provably use good cleaning and some refreshing. The pulley unit is the only piece I have.”
I don’t see it in the video. It looks like a Lovejoy coupling missing the rubber cushioner. Steel dogs against each other , I have never seen.