Here's a 1945 P nickel that seems to be shedding its skin. I'm surprised the flap is still intact as thin as it is.
Delaminations are very common on war nickels, but that seems to be a rather extreme example. Very cool that its still attached!
That looks bizzar anyone's first thought would be damage but this is definitely a nice lamination indeed the fact that it's on a silver war nickel is awesome.