This Capped Bust Half Dollar in AU55 is the O-111 variety.  It has a double profile on the left side of Miss Liberty, of which many, but not all, O-111s have.  Some will have multiple profiles, all part of the multiple strikes during the minting process.  Loose dies many eyes? Er, maybe not but one gets the point. Interestingly the double (or multiple) profiles can vary in length and thickness making each O-111 unique in terms of look.  This example has a very prominent double chin to base of nose that is uncommon.  It has a rich patina with hints of deep blue green when under the light and no major detractions.  A pretty cool coin.
 
This coin is approved by CAC.
 
PCGS Cert. #24117025