I wouldn't buy any used roller lifters I couldn't hand test the wheels, even then I would probably pass on them any ways twocents up
They kind of look a little like some of the older Crowers, Chet and Doug Herbert, Howards, Engle and other vendors that sold that type lifter as their own work

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)