See this thread, it has a GD explanation: https://www.cointalk.com/threads/17...for-you-focus-i-am-focused-i-hope-lol.254975/ As to this one could you please tell me if you see a die crack leading up to your blob (chip) because I was thinking it may be a filled in die break known as an IDB (Internal Die Break). I will show one of mine listed at cuds on coins.
Here is the IDB listed at cudsoncoins The die break is much more strong leading up to more of a fill at the eye.
http://cuds-on-coins.com/roosevelt-dime-idb/ Here is the link and you can also check out all the various cuds and RIDB ( retained internal die breaks). Ain't this fun!!!! Love it!!!