This might be one for Mike Diamond. There are mint errors that can cause such things as seen on the coins in this article- http://www.coinworld.com/insights/voices/notches-fissures-and-holes-left-by-many-minti.html# Do you full coin shots?
From what I see, it is PMD. The devices should bevel into the missing parts if it came from the mint. I see no evidence of any beveling.