I've got another #WhatsThis for you.

This thing sat outside the garage. It's cast, open on the bottom, has a rectangular groove for sliding something into and three holes in the groove. It's somewhat heavy. There's also a flange at the bottom.

Obviously it has been used as anvil/cutting surface, but what is its original purpose? If it's a T-40 tractor part, I don't know where it goes on that.

#Mystery #WhatIsThis #Wotsit #Identification #WhatIsThisThing #WhatsThisThing