Grading "Missing Chrome" Nickels

I believe these coins could be faked. I have no metallurgical knowledge, but I've been experimenting with unplating coins these past few days. You can unplate coins by electrolysis, it doesn't change the chemical and physical nature of the metal.

My result was pretty messy since this was pretty much my first time, my solutions were not prepared too well and possibly contaminated, and my experiment was adjusted for speed not quality.
Here is my result from a 2012 quarter, I'm not sure what the silvery metal under is, the red one is copper, and the grey one on the top is nickel.

Each metal layer is still the same metal, its properties doesn't get changed.
This was done alternatingly in Nickel acetate and Copper sulphate solution.

I did unplate zinc cents and pennies too, but I gave those away to a friend who's doing electrolysis as her school project. I used copper sulphate solution, and the copper dissolved while the zinc doesn't seem to be disturbed too much, as long as I kept an eye on it and rotated it when needed. Don't leave it in for too long or it might start dissolving the zinc too.

If you have uncontaminated solutions with correct voltage, I'm sure you could unplate the chromium off. Here's a diagram I drew quickly:

The cathode gets plated with the Chromium ions, which are positively charged and thus attracted to the negative electrode. The chrome plating on the coin dissolves to replace the ions in the solution. If done properly I'm certain it is possible only to remove the chrome off the coin and not have a visible effect on the metal under it.

That came out longer than I thought...

I watched the video. I'm borrowing stuff from the school chemistry lab and they don't allow me to use acids (except for vinegar, which makes the reaction take forever). The one above is based on my experience of using aqueous metal salts which is faster than using vinegar. I use anything conductive for the cathode. I've used pennies, pencil leads, a nickel, quarters, copper foil, an alumimium coin, and one end of a crocodile clip.
I can only work for about 45 minutes every day because that is the time I have after lunch when the teacher is also at break and there is no class in the lab. The problem is I can't have to prepare new solutions every day since I don't have enough time. I'll definitely prepare new solutions when I have more time.

I tried chrome plating a penny once, it came out black not blue. Must have did something wrong. Don't exactly remember what I did though.