Now here are some not so successful Isle of Man Sovereigns, allegedly same alloy as above Britannia and before and after - One Sovereign 1975...
Here is another relative success of a 1987 Britannia, obverse only: There is a mark in the second curl wave in hair above ear [ATTACH] After:...
Here are some more pictures: First is Singapore 1988 100 Singold, orange on dragon body and a bunch of miscellaneous on the obverse. Same...
Yes, I have seen the spot removal "tag", but not on anything of mine. Confidentially I have done alright just following basic protocol. I did...
Please use the above method. Hell, if you were in the DC area I would do it for you. It really works VERY WELL, it will not mark from just resting...
Those are exactly the orange spots on your Albanian coin. This is a VERY mild electrolytic reaction, so no "boiling" of metal. I think the...
If you think about it, oxidizing an oxidant may work but may not be the best move as it may eat underlying metal or alloyed constituents and alter...
He has said as much but in some thread gave hint to it.... I may try an Isle of Man later tonight or tomorrow because I hate my vikings being...
Stork, that would be a "yes" as far as their treatment, as far as I know.
OK, it is very safe, but possibly not if you just leave a low fineness gold piece in there. Anyway, here is one I just did 15 minutes ago: Host...
Actually this is an electrolytic reaction. No scratches or sharp edges. This will DEFINITELY pass muster at NGC/PCGS. No trace of spot even under...
Yes, good point physics. I always liberally rinse.
This has been published in a couple of places, but after seeing a gold 2014 Kennedy 50c Proof with such a spot on another board with all kinds of...
Don't know if you will do it, but I would like to see pictures after a warm soap and water, and possibly an acetone bath as there looks to be mild...
Actually I am not, and did alright in medical school. There are indeed sebaceous glands irregularly spaced in the finger tips. So, no, I am not...
Actually there ARE sebaceous glands on fingers, and fats/fatty acids are in the residual of a fingerprint (as well as salts and amino acids and of...
I'm not sure if that is correct as the explanation has been that the oils are acted on by bacteria and generate organic acids that etch the coin....
Possibly a better choice I use is ammonia 1:1 with water and tamp with Q-tip then rinse with mild soap and water thoroughly. Acetone will only...
Yes
We appreciate your sharing, regardless of small details. I know even the best of us mess up a little now and then. Keep it up, love your apparent...
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