Discussion in 'US Coins Forum' started by rarecoin, May 3, 2011.
Log in or Sign up to hide this ad.
BTW, cleaning is not the hard part. What is hard is getting what you took off the coin back on it, so just keep that in mind. Plus the patina of a coin may be hiding problems, so many times the coin has more eye appeal before cleaning.
EXCELLENT POST! You summed it all up nicely Lance. The only thing I differ on is using water after acetone. The exact opposite should be done. If anything, rinse acetone off with acetone. I acetone rinse every single coin before I put it in an airtite for long-term storage. The acetone evaporates away in seconds leaving behind a nice, dehydrated surface. Water is the primary enemy of coins!
is that for the really squeaky coins?? lol :goofer:
Lots of good thoughts here. I've come to think that if a person is not happy with a coin, sell it and buy one you like, but if one must, I would think it would take a lot of time and testing to learn how to do it so as it would be hard to spot. Too many variables, type of coin, different metals, what you are trying to remove.
I spotted a couple of pages that you might like to look over. This one mentions ultrasonic and some others. But, when you read this, it mentions items like soap, olive oil.....things I've heard many say not to do.
Another page talks about detecting cleaned coins, and how they can hurt your pocketbook. I reckon with enough time and research, one might master it.
I'll bet that works just fine. I wouldn't disagree with that, Badthad. Those who do a final rinse in water always use distilled, probably quite safe.
You just destroyed the original mint finish on that coin. It's worth melt now.
So who are you supposed to believe, who are you supposed to trust ? That's a pretty tough question isn't it.
Well to answer that question you can consider this, something that experts agree on. Out of the milions and millions of raw coins out there in personal collections or sitting in a dealer's shop fully 80% of them, or more, are considered to be problem coins. Coins that if they were sent to NGC or PCGS would not be graded and slabbed. And the number one reason for that is because of harsh or improper cleaning.
That's a pretty high precentage isn't it ? Guess why the percentage is so high. It's because the vast majority of all the things that can be used to clean a coin, very, very few of them will do so without harming the coin. That means that most of the people in all these threads, and all the books, and all the magazines - are wrong about what products are safe to use to clean a coin.
Yes, there are some products out there that can be used to safely clean a coin. But even a large percentage of those (like coin dips), if used not used properly, will harm the coin and you'll end up with a problem coin. And other products (like acetone) can be safely used on one type of coin but not on another type of coin.
Then there are other products like Coin-Care and Blue Ribbon, products that many say are wonderful and will help preserve your coins, products that they have used for years and years. If you send in a coin to the TPG that has had either of these products applied to them, the coin will not be graded and slabbed for these products contain oils that alter the surface of the coin.
So again, what do you do - who do you trust ? Well, the wise choice is don't do anything. That's why the single most common advice you will ever get is - don't clean your coins.
My personal opinion based on 50 years of experience in the hobby has taught me that the following things, if used properly, can be safely used to clean coins. Nothing else, and no other method should ever be used. They are -
1 - distilled water
2 - acetone, but never on copper coins
3 - xylene
4 - coin dips
That's it, forget anything else. Now you can choose to believe that, or not. But the evidence, based on what happens to the millions of coins submitted to the TPGs, says you should believe it.
note - Thad's product, Verdi-Care, appears to be safe to use for the removal of light verdigris. But I have no personal experience with the product so I can neither confirm nor deny what the outcome would be.
but isn't thad's product meant for problem coins that wouldn't grade anyway?
Probably OK given a sufficent drying period. However, the surfaces will be rehydrated. I like to strip as many water molecules from the surface as possible prior to storage....acetone does a dandy job of that.
Oh...your Lincoln collection is simply AMAZING Lance. Not only in grade, but your strikes on some of the tougher branch mint years are supreme! I can tell you put a TON of effort into it.
Yep, the purpose of VC is not to deceive TPG's or collectors, it's to salvage an otherwise problem coin.....to resue it from the harmful corrosion process.
Separate names with a comma.