If your fender tag has no G codes what kind of outside mirror would it have? A non remote racing mirror or a chrome cheapie?

Chrome "cheapie", oval in shape in '70 & round in '71.

wrong side shown below -

I assume there would nothing in the boxes for mirrors on the build sheet. Only the G41 for the windshield mirror?

correct - "G" is only Glass & Mirrors
no tinted glass & no optional mirrors would just have a "1" under the 4_
... for the "prismatic mirror"

Photo;