NGC 1965 Kennedy half reverse die cap. The error occurred when the coin was struck, stuck to the reverse, die, and then proceed to be struck into incoming planchets. It has large splits in the planchet from the dramatic expansion in the coin's size causing it to split apart!
The error is described as a broadstruck an 95% indent, but "reverse die cap" we believe better describes the error.
A rare error on Kenned halves.
MS65 with mostly white surfaces, and just a hint of toning.