I don't have experience with the differences between a large O and small O on busts and could use some help. This is a 1920 barber quarter. Looking at some other examples to compare, I noticed most large O's are are farther to the right while the small O's are much closer to the 2's. I also noted small O's appear to have thinner tops/bottoms. This coin is close to the 2 but has fairly bold tops, that's about all I've figured out and would love further insight in identification. -Did some further looking prior to posting and found a good comparing tool, personally I'm inclined to believe it's a medium or small O, but again I have never come across one before and would love your thoughts. -Fish
Large O and looks like a B-3 from the placement of the stars. On B-1 and B-2 the 8th star is closer to the cap. On the small 0 the 7th star points to the cap, not the hair. At least that is what I gather from my browning book.