If any of you buy a coin from this person:
http://myworld.ebay.com/nancye913/I'd like your assistance to do some science. I purchased a Lincoln from this seller with the "Rich Brown" designation only to discover the coin had been colored with something. A rinse with acetone removed most of it to reveal the coins TRUE color. Unfortunately, I didn't do it in a scientific manner to prove the coin was artificially colored. I'm wondering if someone would volunteer to let me completely analyze their coin in a laboratory, which would most likely totally remove the artificial color....so I'm telling you the coin will NOT LOOK THE SAME after I'm done.
I've been stewing over this for a couple of months now because I see his coins week after week and they have all been artificially colored....I am certain. As part of my analysis, I will use gravimetry, scanning electron microscopy with x-ray fluorescence detection, uv spectrophotometry, infrared, various solvents, filtration and possibly other techniques. I will get to bottom of this.
Terms:
1) I will pay shipping both ways (to and from you) and you will remain anonymous (if you like).
2) The coin will not look the same upon return because the artificial color will be removed. The surface will not be ruined in anyway, but the natural color will be restored. It will be cleaned with various solvents, no rubbing.
3) I'd like a Lincoln that matches well the base color he's using. An obvious XF-AU Lincoln (flattened cheek) with a "too good to be true" copperish color. This is a perfect example:

If you're interested, please email me.
Thanks