1968-D JFK With PMD Or Something Else?

Hmmm... I believe this is a poorly made cast counterfeit... But why anyone would counterfeit a 40% half dollar, I don't know..

The first thing you should do is WHITE BALANCE your camera.

If it isn't a cast, my guess would lean towards a deteriorated die. Looks cool if genuine.

Hmm...yeah, it looks fake to me. Course, in '68 it might be worth faking a half dollar?

Your pictures are very sharp. The quality looks good. Try using different light sources. If you are using house light bulbs, try fluorescent or natural daylight. Incandescent bulbs could cause a yellow appearance if the camera can't adjust for this.

Give us a picture of the coins reeding on the edge. This may help the diagnosis.

The obverse looks like a whizzing job gone really bad(not that there is such a thing as a "good" whizzing). The 2nd photo in the second set of images shows the striations left by a high speed rotary wire wheel, they are much stronger than hairlines left by a typical cleaning. Unfortunately, the white balance setting makes it very difficult to see what is going on with the lumps on the reverse.

My best guess would be that the coin was soldered to something(belt buckle?) and someone tried to remove the remaining solder with a Dremel or wire wheel attachment on a drill and then just carried the work over to the obverse as well. Since there are no lumps on the obverse, it received a less vigorous abrading than the reverse.

Is it the one in the middle?

with biokemist6 except I don't think it was soldered. It looks like it fell victim to a blow-torch. Then, after it was a blackened mess, it got whizzed.