No @PamR . Looks like a "Blurry" Damaged MintMark to me anyways. Funny thing however, I take my glasses off and thing look fine.
Doesn't exist,the over MM's stop at the 50's,nothing above. http://varietyvista.com/02a LC RPMs Vol 1/OMM Listings.htm
It sort of looks like one to me, so I can see what you are seeing. But as said above, it is the result of damage and the imagination.