Capped Bust Half Dollar Attribution Guide
Obverse: Die line piercing the liberty band beneath the I of LIBERTY. Another identifier is a horizontal die line in the field immediately above the cap. The 1 is only 1/4 mm from the drapery.
Reverse: The U was punched once, then rotated counterclockwise for its final cutting. The original cut of the U can be seen to the left of the uprights of the U. (Reverse shared with O-105 & O-106.)