1983 P Kennedy Half Dollar Error? Need ID Of The Coin.

The reeding is really neat looking. I've never ran across one quite that void of nickel.
I'm not sure if it's an error per se but someone that knows a lot more than me will be along soon.

I cannot offer a definitive statement, but to me it looks like the REV was somehow protected while the OBV was exposed to the elements. I remember pulling BU coins, after many years of storage, out of my old Whitman folders that looked like this,

I have encountered coins with a rim like this as well as coins with the copper being a thinner strip on one area and thicker on the other. I just always assumed the process for making the clad blanks was imperfect.

Someone who knows more will likely chime in.

Being in the elements, lets say sitting on a window ledge with the obverse showing for a number of years, will alter the surface. The the surface hazing is covering the silver color on the rim. It turn the silver a different color, why not the edges?

Thanks for the info guys. But, what I dont understand how's the rim only showing copper core all around? I do understand due to ED, and exposed to the element on the obverse. But, by looking at the rim I thought it was struck with 100% copper.