I am selling it on ebay but I have no idea what it is.
Item number: 260117285398
I know this is not truck related but I figured maby someone older than me would know.
If I had to guess I would say it is some sort of capstan winch, or variable speed accessory drive for a belt driven farm implement. I would lean towards the latter though, capstans are smooth so you can get several wraps of rope around them.
