Questions About The Cumberland Gap Quarter

I'm just curious about the cause of the details I have marked in red.






#1 I think the blob on his back is a retained die chip but what about the rest?

#2 On the hand is simply a raised area between his fingers that I have no understanding of.

#3 The container has a smooth lump that could be a chip or something else, please feel free to confirm.





#4 lastly I don't know why the letters on cumberland gap are shaped indented at the top the way they are.





I have included a photo of a normal quarter for comparison





I like to learn so the help would be appreciated.