I did call Winchester. Got a guy in service. Took the guy 8 minutes to find a date for one rifle, could not find the date for this one G1762463.
And I did find the records from 1935 - 1992 that "rte" provided, but nothing else.
If I had Roger Rule's book, maybe serial numbers are in there? But I don't have his book. His website provided no serial number info that I could find.
Still, I'd think there must be SN info somewhere?
Fenton (OP)