Rare bridgeport m head profiling attachment

Rare bridgeport m head profiling attachment

This is a unusual attachment that came with my M head, Bridgeport milling machine. It is called a profiling attachment. I was told that it purchased new with the machine in 1948. It looks as if it has never been used. This is a genuine Bridgeport accessory. It has stamped on it the number 932.
If you collect this stuff it may be your only chance to own one.
Again, it is for a M head not a J head