If there is a "G" in front of the serial number, it's a CRF, probably from the 90s. Early CRFs had low (in the range of pre 64s) numbers with the "G" prefix. It can be confusing.
This. OP, Is there a "G" prefix on the serial No. and what is the serial range? G123xxx as an example.
Is the floor plate stamped Super Express or Safari Express? I have never seen a Left hand G series M70 Classic in .458 Win and a quick reference to Winchester catalogs I have on hand from the late 90's does show that configuration being cataloged. Left Hand .375 H&H was common and I have seen one left hand G series classic in .416 Remington in the flesh.
Does the barrel have a custom shop stamp on it? That would appear as
- Classic Custom Safari - or
- Classic Custom African -.
