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Toning Coins

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Pillar of the Community
zxcccxz's Avatar
Canada
5417 Posts
 Posted 09/09/2014  9:23 pm Show Profile   Bookmark this topic Add zxcccxz to your friends list Get a Link to this Message Number of Subscribers
So, I've been thinking and experimenting lately.

There are plenty of topics regarding toning and I though to test some theories out for myself.

I have three coins that I'd like to tone over naturally but I don't have the 10 years it might take. The coins being an 1836 CBH, 1875-S 20 Cent and a 1872-H Canadian Quarter, all Mid-AU.

The 1836, I bought dipped, the other two I dipped myself.

Ofcourse, Instead of testing with these coins themselves I just bought some Mid-Grade AU Scrap Silver and started testing the different methods online.

I boiled an egg, took it out of it's shell and left it in a Ziploc Bag with a Canadian Silver Dollar for 3 weeks until the egg was pretty rotten. The resulting sulfer caused splotchy Golden-Brown toning on the silver dollar but it's still around 10% White. It started out around 80% White. The toning is similar to the toning coins often get from being left in old albums. I'm not sure how coin safe this is though. I will dip the coin in acetone before placing it back in with the others.

I don't really want to try baking a coin in the oven as that is pretty harsh and could damage it. I've heard the idea of leaving a coin in a sulfur-rich envelope. Any idea how long this might take?

I'm not looking for "Monster toning" just looking to make some bright white coins develop some sort of patina, preferably, light brown or golden although anything pleasing works.

Has anybody conducted similar tests? If so what were your results?
Pillar of the Community
AgCoinAu's Avatar
Canada
3049 Posts
 Posted 09/09/2014  10:24 pm  Show Profile   Bookmark this reply Add AgCoinAu to your friends list Get a Link to this Reply
I have tried some toning experiements myself... but on some pretty worn junk silver...

I did get some pretty cool colours from using a powdered form of sulphur and electrolosis ... I'm not sure if you can search my history of all my posts but I did include some pics..
Valued Member
Copper Penny Connection's Avatar
United States
415 Posts
 Posted 09/09/2014  10:39 pm  Show Profile   Bookmark this reply Add Copper Penny Connection to your friends list Get a Link to this Reply
Hey,
A hard boiled egg is by far your quickest, and harmless way possible. The key is to use heat and light in conjunction.

1. Take a crock pot and set it to low or warm. (if you don't have one take a glass Pyrex dish, and use plastic wrap to cover).
2. hard boil an egg, and while still hot, place into either your crock pot or dish.
3. smash egg in pot, but be sure to not let the egg touch coin.
4. cover dish or crockpot
5. Put direct light onto the coin from the top of the dish.
6. wait about 10 mins and toning will start to instantly occur.

If starting with a white coin, coin will first become golden toned, then turn into magenta's and blues. This progression happens very fast and if left too long will turn darker and eventually become blackened.

If you find that the coin is coming out with an unattractive spotting, place coin first into a 2x2 manilla style coin holder (paper kind, not the plastic, pvc, staple style, ECT.......good ole paper towel works too but dont over do it. The spotting is caused by the moisture released from the egg.

Good luck doc!
Bedrock of the Community
United States
20753 Posts
 Posted 09/10/2014  10:19 am  Show Profile   Bookmark this reply Add just carl to your friends list Get a Link to this Reply
1. Take a coin and just bury it in the dirt in a forest with trees. It may not tone and you may never find it but gives you something to do.
2. Take the powder out of a shot gun shell. Add your coins to this powder and light. Again, you may not find the coin but if you do, should look different.
3. Constantly wipe sweat from your body and add to a coin. Allow it to sit there for a while. May not tone and sure will smell funny. But if it does tone, let us know.
4. Fill a plastic bag with dirt and water and add coins.
Pillar of the Community
wireman09's Avatar
Canada
972 Posts
 Posted 09/11/2014  03:35 am  Show Profile   Bookmark this reply Add wireman09 to your friends list Get a Link to this Reply
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Argentiferous's Avatar
Australia
8 Posts
 Posted 09/11/2014  10:23 pm  Show Profile   Bookmark this reply Add Argentiferous to your friends list Get a Link to this Reply
YES, copperpennyconnection is spot on. I tried the still hot mashed egg in a Tupperware container on a few silver maples, one at a time for various periods, but since they don't have the 10% copper alloy I'm sure the results would vary. I leant the maple on a scrap coin to expose both sides to the atmosphere. I also tilted the Tupperware container so the coin end was raised to let condensing water run towards the egg away from the coin. Within minutes the surface went golden but you have to open the container to view as the interior fogs up. Ultimately times the greatest factor as there's a fine line between golden tones to psychedelic patina and eventually gun metal/dark blue-black. Enjoy !!
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