I believe I've seen a similar coin to this in the past. That coin was a "struck thru" error. The image above looks like the gray patch is lower that the normal surface and does not cover the "P" which is a lower part of the die. Therefore, I believe this to be a mint error (STRUCK THRU) and not corrosion, glue, debris, or contamination.
I was expecting ICG to grade it as Unc. details damaged. Glad they didn't, usually they are in the ballpark on dollars sometimes overgrade Morgans by a point, but problems they can be harsh on.
The only way that straight graded is A) ICG was completely asleep at the switch, and although I might accuse them of overgrading I won't accuse them of that, or B) It was all a planchet irregularity to begin with. Can't wait to see it.
12-24 hrs in acetone for copper & bronze coins. 12-24 hrs in ammonia for silver coins. Always rinse with water & pat dry after. If the coin has heavy rust, cleaning it will decrease the coins value as you will be left with pits in the coin surface.
I would rinse with distilled water, not tap water. Sometimes a quick dip in acetone followed by setting the coin on edge (for drying) does the trick.
Rubbing alcohol dips also shouldn't leave a residue. If only coins could talk. "Not another dip, please!"
Actually if it contains water, yes it will leave some (as in 75%). You'll want 91% or 99% alcohol to avoid any residue.
I contacted the senior grader Skip Fazzari on the coin yesterday and got this response today: "I remember the coin. I thought we put “Struck Thru” on the label! Is it yours? Looks like it shipped out yesterday or I would have corrected the label."
If you can't find acetone (it is pretty common) look at the label of nail polish remover, if it says 100% acetone, you've got it. GooGone also works on the residue and not the coin, but I would use the acetone first, you can soak it for 24 hours if the residue is really hard and has been on for a long time. As a reminder, acetone is highly inflammable, best to use with ventilation and DOES NOT react with the coins metal. I've submitted several coins that have been treated with acetone to TPGS and have never received the dreaded "surfaces altered" notation on the label. Just remember to rinse with water and dab, not rub the coin afterwards, warm water seems to work better than cold, has a faster evaporation rate, so add that extra step. Lastly, use hard flips, not soft ones (okay for very short storage, but I've thrown out any soft ones that come my way) so you don't have the same problem in the future. Good old cardboard flips are still the best, if not he oldest way to store coins if you dot have a capsule that fits.
Really glad I came across this thread. I have a full set of Franklin halves that had been tapped into a Whitman book many years ago. I'd like to remove them and store them properly but was sure what to do about the tape marks. Looks like I'll be buying some acetone and sending them for a little dip.
I use acetone and this stuff that was advertised in coin dealer newsletter: With acetone from the hardware store, long soaks are no problem but eyeball the coins first to see what the problem is.
Why don't you ask them to make a custom label for your coin? The error is neat and the coin is incredible.
Don't think so. I think this is called a "white elephant." It is like a 1955/55 1C with a major clip. The error collectors will not pay what the coin is worth and the variety collectors don't want an imperfect example of the variety.