Some people regard cleaning as a sacralege , the others don't care as much , but only if done right , ie not removing the coins surface luster , NGC will "conserve" them for you . You're right cleaning coins is subjective . rzage:smile:hatch::hammer:
I guess but I'm sticking with original and uncleaned. I think this is one of the many things that make collecting so fun. There is always a market for whatever? I have a freaky fedish about not knowing who all handled the old coins and that is one of the lures that draws me to them? Maybe in the near future we'll be able to pull DNA off them and have that as a part of the pedigree, lol! Think I should contact GEC about this? Ha/Ha!!!
I have never seen the coin turn colors while in the rinsing it off period, but if you already know the answer I would like it very much if you would tell me. I notice the change in the color of the copper when the MS70 is agitated, or generally after it has been on the surface of the coin for a few seconds.
thumbs down I have used MS70 and it changes the coppers if you leave it in too long- an ugly orange "pumpkin" look. Did remove corrosion on a 1911 D lincoln and made it look better. I guess for corroded coins it could help. I am no expert with this though. Practice on common coins, IMO. I like Coin Care on all my coppers. Leaves a protective film on the coin that repels chemical reactions with ionic compounds. Eventually, will send some of my BU coppers with small oxidation damage to NCS for conservation and then to NGC. Just my opinion. dprice7
I have cleaned many coins and I can honestly say I have seen no difference between hot and cold water in the apperance of the coin that I can remember. I have soaked coins in warm distilled water and used hot water, in fact I have boiled coins. I was told that I might be able to break a crusty coating on an old coin by boiling it then putting it in the freezer The idea behind it is the metal will slightly expand and it may crack the crust, the freezing will make the coin shrink ever so slightly. It did soften the crust a bit but didnt crack it, I ended up using a pick. The water itself did a bit of a softening job but it didnt work as I was told it might.
Ms 70 Hi Everyone, This discussion about MS 70 as an appropriate cleaner for coins (if used properly) is okay with some. I used this product on a badly encrusted IHC. The liquid was poured into a 50 cent coin tube and the coin was put in and the lid was closed. I watched the cleaner start dissolving the coin immediately, seeing the little bubbles rise up from the coin. Something told me to wait until the next day and check the coin again. By then the liquid had turned completely dark green and the coin was about half its original bulk. I do not mean to offend anyone with what I have written about the chemical and the company. I only want anyone who is interested and concerned to do some research and see for themselves. This evening I became curious about the product so I got on the internet and began a search for Betterbilt Chemicals. If you want to learn something very interesting about this company just type in the name and watch how many hits you get. Now, what this all boils down to is... what on earth would we want a chemical such as this inorganic cleaner in our homes? Nothing I found tells me exactly what is in this particular product. What I have discovered is the company not only makes MS 70, but it makes a weed and grass killer, an insect spray, a No Sting Wasp and Hornet Killer, and a product Super Pen which is a penetrating lubricant, and another all purpose cleaner called AP-23. This company has been called to task about contamination of soil at its old facility by the Hazardous Materials Regulations department in California. Other violations include the company being brought to task for using tetrachlorethene (PCE) and trichloroethene (TCE) which contaminated soil at its original site in California. (this was a long used site by many chemical companies which were named along with Betterbilt). For fun I looked up PCE to see what it was... the PCE is a volatile chemical used to dry clean clothes and has been known to enter the ground water and contaminate it. Both of these chemicals have a long history of uses and resulting problems. Type in the chemical names and see what pops up in the search. jeankay ( if the moderators want to kick me off the forum for this post then so be it.)
I was practicing with MS-70 on some nickles and pennies , after using it on both for about 15 seconds a side I rinsed them with warm tap water then with distilled water , after letting them dry I put them on the side with the penny on top of the nickle , later I noticed the nickle turned a copper color where the two coins touched . This is definately not a benign substance , a substance I would consider quite harsh . If you use it , practice on many junk coins 1st . rzage:smile:hatch::hammer: