Standard rib, 60/40 poi, small grip, parallel but stock, forearm attaches with 1/4 turn of screw driver, manufactured approximately 1971. I owned #425 for a period of time. It loved 2 and 3/4 dram, 1 and 1/8 ounce loads of number 8's.
Broke my first 25 and 50 straight with that gun. It was very good to me.