earl:
Does it, by chance, look like a Win 52 trigger..?? If so, it was probably a Winchester 52 that was modified by Selby Wright. Selby was an old BR-50 shooter and modified a couple of Winchester 52 triggers.. I have one in my 52-c that Shelby modified and it breaks at 2 oz. and is a beautiful trigger. I don't know if Selby ever patented it or not.. I also have a copy of Selby's instruction sheet on how he modified the triggers..
Dave