No. Actually what I have is an 1800 large cent badly worn on the obverse—an AG3—and a VG8 on the reverse. I’m wondering if it is okay to call it a G4.
Again - pictures would help. The reason I say that is depending on the strike you may go with a higher grade. But I have found on large cents the reverses tend to hold more detail than the obverse. So more than likely it would be ag3 - just speculating.
As I understand it most (all?) TPGs assign a grade based upon the worst side of a coin. Averaging is NOT done. (For this answer I'm ignoring grading factors other than wear.) And the days of split grades are long gone.