Very scarce M52|Winchester .22 Rim Fire|Forum|Winchester Collector

For you M52 guys that have never seen one, here is a pic of a very scarce, maybe rare, M52 1st model Speedlock. I just ran across the pic in my files and decided to share it once again.

1. Heavy Nickel Steel bbl.

2. Round top receiver, no provision for an 82-A.

3 Right side factory mounting of a Lyman 48-T.

Thoughts?                  Big Larry