Plus 1 re comments of Hunter...., AK.... and Mr. C.!!!
Lou Luttrell, is the expert's expert without doubt on all Model 70 rifles "PRE '64. As he is quick to point out, not necessarily so regarding post '63 Models at all.

Mikey, two likely possibilities. Either: A. You're working with an erroneous serial number as above suggested in context of common error... . Or... B. You're dealing with a pre '64 Model 70, but erroneously classifying as "factory" what amounts to an aftermarket conversion.

I'd sure like to see that rifle! Please keep us informed!
Best
John

Last edited by iskra; 09/14/21.