Is this a striking error / variety? (Walking Liberty Half)

I am perplexed by the reverse of this coin and the area above the foreground (left) wing of the eagle....directly underneath the word 'of'.
Does anyone recognize this feature and can tell me what it is, what caused it??

BTW...this is a 1942 from Philly.

 

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You posted this thread twice. You need to click on "Report" and ask the Mods to, either, delete or combine them.

Chris

 

No need to ask; "the mods" are here. Locked this topic; check this one out:
https://www.cointalk.com/threads/is-this-a-striking-error-variety-walking-liberty-half.282078/