Do coins continue to tone

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if you really want to harvey can tone the coin any color you want within 24 hours while still in the slab.

the us mint itself supplies matierials that aid in toning

oh we live in such a beautiful world

only one problem i hate toning

 

depends on the air grandpa. some air will make it tone faster than anything you have ever seen

you should really quantify what a life time means

 

My thoughts as well. I would clarify, though, that the "toning source" can be as innocuous as air.

 

what are the factors?

 

Off the top of my head:

Gasses in the air (sulfur, methane, etc).

Humidity

Quick changes in temperature from cold to hot, and vice versa.

 

So if I were to walk in and out of my house in the winter with a coin, it would tone? That seems unlikely.

 

No. Do it about 2,000 times then maybe.

 

There is a well known book called Coin Chemistry by Weimar White. I don’t own the book but I have read a friend’s copy. (It was a short read as I recall). I believe that there is an example provided in the book where a coin is toned inside its slab. Sorry, I don’t have the book to confirm this. Perhaps someone with the book would chime-in.

BTW, most slabs are not air tight. Also, I believe that there have been slabs that included materials inside the slab that caused toning affects. I give no fault to the slab companies that used the materials because they were just as surprised as the coin owners.

 

Don't store your coins in the bathroom!!!!

 

I know air causes coins to tone further, but how come the most rarest coins are not store under vacuum?

 

Dry air, with no sulfur source, has very, very, nearly zero ability to tone a coin. Storing under a vacuum is troublesome in its own right, so the best/cheapest way to store good coins is in a holder mostly air tight, with dry clean air around it. Also, keep it out of any light source.

 

Sounds like a fun experiment. Not trying to increase the coin in value, could I put a silver roosie in my pocket and go around as usual? It's around 70 degrees indoors and 35 degrees outdoors. Would this cause a noticable tone, and would it be NT or AT?

 

mute

If you begin with an MS70 silver dime then it would quickly become an AU coin I think.

 

I mean more along the lines of beginning with an AU in a 2X2 flip in my pocket.

 

Page 75 ~"Ultrasonic seal is not airtight" as originally in Coin World, 7/8/96.

 

Regardless of the level of protection, all coins will keep toning over their lives. It's all a matter of rate.

 

Isn't that just a bit 'bulky'? Like, I can see the lady askin' me, 'is that a gun in your pocket or are you just happy to see me'?...........