? 1860 O - faint O - Seated Quarter ?

I came across the coin the other day it is dark and AG/G at best but clearly a faint or broken O.
What is the story behind this? Is it more or less rare than others?
Sorry no pictures the coin is so dark that all attempts prove pointless.
What is the story behind this? Is it more or less rare than others?
Sorry no pictures the coin is so dark that all attempts prove pointless.
Awarded latest "YOU SUCK!": June 11, 2014
0
Comments
This is Rev B Die State
This was caused by heavy die polishing at the Mint. It is common to see this on that year.
Derek
Sorry about the bad pic but you just might be able to make out the top of the "O" here.
EAC 6024