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Offline sammygirlTopic starter
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« on: November 29, 2009, 08:08:35 am »
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Question, what is the best way to clean your coins? What methods do you use and how well does it work? I mainly am trying to find the best way to clean copper without damaging the coin. But would love to hear how you clean your finds. Grin

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Offline GoldDigger1950
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« Reply #1 on: November 29, 2009, 02:31:27 pm »
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For spendable, modern coinage, I use a vibrating tumbler used for cleaning brass casings before they are reloaded. Walnut shell grit with rouge in it works good but the coins have an "other worldly" look about them. They shine but not like from the mint. It makes them spendable as change.

For older coins, I leave them unless they are caked with dirt and then I use an old toothbrush to clean them. I use a few drops of dishwashing detergent and a teaspoon of vinegar in around two cups of water as a soak. Let them go overnight and brush them in the morning after dipping your brush in olive oil. The olive oil dip keeps the bristles from being too much of an issue gathering grit. The oil on the brush keeps the dirt from clogging it.

In the downloads area there is an article posted about using an old wall cube power supply for reverse plating. In a nutshell, you use an old piece of copper or steel pipe as the gathering electrode and the coin as the plating electrode. They recommend salted water but I use the same solution I use for soaking. The crusty, welded on corrosion comes off in an hour or so. Do this process outdoors because it releases hydrogen gas which can become explosive in enclosed areas. A back porch is better than a kitchen for this one. Each coin has to be done individually so this is a special treatment.

For the modern, clad coinage like quarters, vending machines and parking meters make good "cleaners" since they don't care how dirty the coins are. Banks also exchange dirty, chipped or cut coins.

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Offline sammygirlTopic starter
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« Reply #2 on: November 29, 2009, 08:05:41 pm »
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Thank you GoldDigger, this is very helpful! I haven't tried the baby oil on the brush, nor a tumbler. I will have to check the net for that one. I appreciate your input!  Kiss

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Offline johnlaw
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« Reply #3 on: November 29, 2009, 08:23:30 pm »
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Quote:Posted by sammygirl
Question, what is the best way to clean your coins? What methods do you use and how well does it work? I mainly am trying to find the best way to clean copper without damaging the coin. But would love to hear how you clean your finds. Grin


I've used the vinegar and soap solution as GD stated, it works pretty good. If you have what may be a valuable coin you might not want to do that or ask again for additional advice.. Have a good hunt.
John

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« Reply #4 on: November 30, 2009, 08:01:17 am »
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                          Ive tried all thoes things , the coppers clean up fairley well but their not in circulation over here now so you cant spend them , and the time you waste cleaning them costs more than the coin is worth except a couple of pre decimal pennies that are worth thousands , but you wouldnt attempt to clean them leave that to the experts , and dont mix the coppers with anything else especially nickle coins or you will send them  "nickles "pink .
                          Pickling the coppers work well and tumbling the silver and nickle work well . but it is not a 10 miniute job ,  I had heard that tumbling your coins with the plastic beads they use for plastic injecting moulding work pretty good , but I havent tried that yet ,on account I havent aquired any beads .
         

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« Last Edit: November 30, 2009, 08:09:32 am by aussie »
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« Reply #5 on: January 04, 2010, 02:17:55 am »
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for modern copper coins i use a cup of water with vinager and salt added.  but old coins you want to be carefull of cleaning, if you take a shined coin to a collecter or shop the first thing they will say is why did you ruin it. cleaning by removing loose dirt with soft brush ok. chemicaly cleaning/polishing bad. have fun coin hunting!

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Offline CrazyCoinLady
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« Reply #6 on: June 20, 2010, 06:16:03 am »
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OMG! You don't clean them! Soap & water to get off dirt is all. Tumblers & things with vibrations = bad.

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Offline GoldDigger1950
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« Reply #7 on: June 20, 2010, 12:06:04 pm »
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Quote:Posted by CrazyCoinLady
OMG! You don't clean them! Soap & water to get off dirt is all. Tumblers & things with vibrations = bad.


Most of us know the difference between modern, clad coinage and valuable coins. Both are cleaned differently but without any drama. Spending brown coins doesn't seem to please shopkeepers so cleaning them is a trick of the trade.

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Offline CrazyCoinLady
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« Reply #8 on: June 24, 2010, 05:26:06 am »
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Actually a shop keeper should only care that they can read the date. Although on modern coins why bother?

The main reason I say don't is far to many time people do it and destroy a valuable coin. You might be surprised even some modern coins have some value.

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Offline GoldDigger1950
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« Reply #9 on: June 24, 2010, 05:47:02 am »
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Quote:Posted by CrazyCoinLady
Actually a shop keeper should only care that they can read the date. Although on modern coins why bother?

The main reason I say don't is far to many time people do it and destroy a valuable coin. You might be surprised even some modern coins have some value.


Not if they're brown and nicked by a lawnmower. You are absolutely correct about silver coinage and most certainly gold.

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