I scrubbed it with a tooth brush in oil, then in dish soap, then in acetone. Got cleaner but never changed. (all that was before the imaging) Seems to be part of the coin from minting.
morning-hi all--You did what? Acetone? Wow! I was going to say looks like a leaf, but now I say super glue???? heading to florida for a week, later..
^ that indicates that you support my position and that we are on the same page, unless you feel the cleaning was an issue?