I have 3 PF winchesters that I am pretty sure were made during the 1980's that also start with G and then 7 digits. I have tied several websites and have never found anything. Short of calling Winchester, I have no other ideas. With Winchester in the mess they are in I'm not even sure there would be anyone there who could help.

Most people don't really want the truth.

They just want constant reassurance that what they believe is the truth.