The "thing " with the fingers appears to be die deteriorstion on stinkin zincins. It seems to be taking that dimpling effect. I have been noticing that more and more on the darn worthless zincoln. I think it has something to do with plating, zinc core and how deterioration shows up on the VLDS coins. I think I may use you pic in a question I have for some experts if you don't mind.
Getting the "Finger" is a nice DDR
. This ia the one you have: