Opinions needed Coin has no cladding, weighs only 5.30 grams the whole edge is reeded with center inset as if planchet was to small before being edged and pressed
Welcome to the neighborhood @Mike Eaton ! Your coin looks like it was treated in a mild acid which ate into the central part of the edge. This is what my Kennedy looks like missing the clad layer. @paddyman98 has more images of his certified coins missing a clad layer. Chris
The issue with your edge might be a Partial Collar strike but since I can still see a bit of reeding then it might be altered on purpose.