Vintage Chevy Corvair 1962-1969 Original Scissor Car Jack Stamped RR 2Ton

This Vintage Corvette car jack came from an estate auction it was list as a 1962/1969 Corvair 2 ton car jack. It has a 2 stamped on the side and the letters RR under the top bar. When folded down it is 3 1/2 inch high. I don't have any more to it or any more information on it.