I've got a puzzle. I've got a MKIV 70 Series NM GC 1911 Model 5870 with a 70N57XXX serial number. Looks just like the MKIV 70 Series NM GC 1911 with a 67XXX serial number (and several others a friend and I own) except for the fact that the lettering on the 57XXX is much larger and starts close to the ejection port!
Any 1911 experts have an explanation for the differences.
Any 1911 experts have an explanation for the differences.