JFrom what I've found on the internet so far G prefix Model 70s supposedly ended in 1992
Wrong. Winchester added the "G" prefix in 1969 to denote the anti-bind bolt feature incorporated into that iteration of post-'63 Model 70s. The "G" prefix continued right up until the end of New Haven production in 2006. BACO then changed the serial numbering convention to that of Browning firearms; i.e. 1234ZR5678 vice G12345678.
