I have been experimenting with different chemicals on coins to see what type of effect the cleaning agent would have on a coin. I have found one chemical polishing agent that doesn't scratch or takes metal away. Very interesting product. It's designed to put on Classic Car Metal. so as you can see, it doesn't leave one scratch. And it gives a coin a proof-like finish...it's just amazing.
This was an informative thread! I learned that skilful whizzing can make a coin very attractive. That Barber half, not that sad Morgan. And something I already knew: I am not generally bothered by artefacts which only show under 10x mag. But then I'm not buying $10K coins either. Yet.
Chemicals used by "Gearheads" and professional to treat the delicate painted surfaces of cars (not rubbing compound!) can be used on coins with good results. Reading this thread again (I had forgotten about it and started to quote and correct posts here - now deleted). Thankfully (timewise) I had already done it years ago. There is one mistake in my column. The sentence should have read: Prior to 1972, the ANA defined “whizzing” as chemical cleaning when it was actually a "mechanical" alteration. Now, look again at the Large cent image. This should prove that no magnification at all is needed to detect MOST whizzed coins ONCE YOU KNOW what it looks like. Micro whizzing is harder to detect without magnification. Here again, with experience it can still be done most of the time and then confirmed using magnification. COLOR and the type of luster is key.
Can add this to the wall of shame. Here's a buffalo I thought was in MS condition and NGC graded it AU details whizzed. I paid over $100 for it a long time ago and decided to get it graded. I took the above pictures on a copy stand under decent lighting. Most would say these would be considered above average pictures for an online auction. The seller made no note of it being whizzed. Here's some new pictures of it close up with light hitting it just right so you can see what NGC saw. This is the first I'm actually seeing of what they saw. With the details this had, I would have never guessed that somebody would have whizzed it as there shouldn't have been a need to. But, I was wrong. A seller isn't going to give you these photos: If you aren't looking for this type of damage you'll over look it in hand more often than not and definitely from online auctions. The lighting has to be just right, you have to have it magnified and you need a trained eye. I HATE buying raw coins and rarely do anymore.
No. It looks lightly circulated. There are some parallel hairlines on the face. Tipping the coin would reveal how bad they are or if it was cleaned. The circle is a die break in a common location on these dimes.
Yes to all above. Getting fooled several times upon submissions I’ve become leery of older coins that look brand new and are ungraded by PCGS or NGC.
Thanks, I guess it fooled me because I was thinking there was metal build up on the U and the R's tail. Much appreciated. Regards.