Capped Bust Half Dollar Attribution Guide
1807 O-111 R6

Red Book Variety "Bearded Liberty"

Left serif of 1 missing, top of the 1 is higher than the top of the 8.
Later die states, O-111a R5 & O-111b R5 show a die crack from chin to chest often referred to as "The Bearded Goddess"

50 is re-punched over 20, evidence of the 2 visible on the left side on the upright of the 5. Reverse shared with O-112