1983 Nickel What Kind Of Error Is This?

I'm with E&V.
It is a Very Late Die State coin (VLDS). The die state is evident by the die flow lines going from the center to the rim and are usually heavier nearer to the rim.

Definitely looks like MD on the last "O" of MONTICELLO.
Die Deterioration PLURIBUS.

Yes, excellent example of Die Deterioration issues. Suggest keeping it for comparison purposes..

I agree with DDD. The Die that struck this coin was at a VLDS and way past it's retirement

As others have said, DDD. That melted butter look is classic Die Deterioration Doubling, I see it all the time on 1980s nickels.

It looks like the die cavities that strike the letters were also beginning to warp. You can see that the main letter bodies are withered and twisted.

As collectors, we are often critical of how hard the Mint ran those dies in certain decades. Realistically, you can't see the difference when the coin is sitting in your hand, even if it looks like that under magnification.

Good job spotting the abnormality. Your picture quality is also good.

thanks everyone I guess I will save it for the collection