Dime With A "Copper Wash"...is This Real?

LOL, that is someone who completely misunderstands the term "copper wash" It has nothing to do with reusing wash water. The provided pictures are terrible and I have to assume that this is just an altered coin and nothing more.

A copper wash can involve an immersion in a copper plating solution or refer to a sintered planchet. This coin is a 1976 so it pre-dates Zincolns not to mention the fact that the Zincoln planchet are produced by a private contractor, Jarden Zinc, so they are plated before the planchets arrive at the Mint. Copper dust can accumulate in the annealing drums and a planchet that gets stuck for an extended period can essentially be powder coated with copper. The heat is not high enough to melt the copper powder but it does fuse to the surface of the planchet, this process is known as sintering.

I am sure there is some sort of cleaning process but if all of the Mint SOPs were followed, there would be almost no errrors minted I doubt if they try to reclaim small amounts of copper dust, the time and effort involved would probably render it ineffective cost-wise. I am not even sure if the Mint has ever utilized a dust recovery effort for silver but I do know they they previously did it for gold.

How about post mint copper plating? I used to do this to coins when I was a kid with a toy chemistry set!