It's obviously not a genuine Kennedy half based on the portrait and whatever text is under the portrait. Assuming the holder is a standard 2X2 this piece is roughly nickel-sized. So, I'd guess it is some kind of souvenir medallion.
If it's silver it would be worth bullion price. Otherwise I expect it would have no collector value.
If it's silver it would be worth bullion price. Otherwise I expect it would have no collector value.





















