Lets play Name That Tone! (AT Method, that is)

Hi,
MrsSpud recently volunteered me to give a talk about how to detect AT to the YNs next month at our local coin club. So I have been thinking on what to say and to show them. I might briefly touch on the chemistry, the progression of colors, etc... But I also might bring in some of the coins I experimentally AT'd to show them what to look for.
Based on that I decided to do a few more experiments and dreamt up a new technique. I can't get rainbows yet with the new technique, but I basically can get most of the primary colors to cover the whole coin, one color at a time. Here is a sample. Anybody care to guess the technique? If nobody gets it, I don't think I will reveal it just in case there are some budding EbayATers lurking. But if someone gets it right or close I will say so.

Also, I would like some opinions on whether or not it is a good idea to give these out to the YNs as examples of AT coins. Thanks, in advance, for any responses and thanks for looking.
MrsSpud recently volunteered me to give a talk about how to detect AT to the YNs next month at our local coin club. So I have been thinking on what to say and to show them. I might briefly touch on the chemistry, the progression of colors, etc... But I also might bring in some of the coins I experimentally AT'd to show them what to look for.
Based on that I decided to do a few more experiments and dreamt up a new technique. I can't get rainbows yet with the new technique, but I basically can get most of the primary colors to cover the whole coin, one color at a time. Here is a sample. Anybody care to guess the technique? If nobody gets it, I don't think I will reveal it just in case there are some budding EbayATers lurking. But if someone gets it right or close I will say so.

Also, I would like some opinions on whether or not it is a good idea to give these out to the YNs as examples of AT coins. Thanks, in advance, for any responses and thanks for looking.
0
Comments
The Ludlow Brilliant Collection (1938-64)
Hopefully, I'll have figured it out enough to be able to tell the YNs something worthwhile by the time I give the talk next month
Those are some pretty coins you've made! Have you been baking them in your oven at various temperatures/durations? Just a guess!
I'd give 'em to the YNs -- chances are they won't show up on eBay (for a while, anyway)!
John
<< <i>Have you been baking them in your oven at various temperatures/durations? >>
No, but you are on the right track
Ash
President, Society of Silver Dollar Collectors
Governor, National Silver Dollar Roundtable
President, Ashmore Rare Coins
Wiped clean of soot.......
Marc Vetsch
<< <i>Heat in the presence of Sulfur? >>
<< <i>Different intesities of a blowtorch??? >>
Nope and nope. The technique is much simpler and controllable than any of the methods people have mentioned thus far. It is controllable enough that you can decide which of the colors you want (yellow, gold, reddish purple, purply blue, sky blue) beforehand. However, it is not controllable enough to get and of the other colors that appear sometimes on naturally toned coins.
Silverman68, jfoot13, GAB, ricman, Smittys, scrapman1077, RyGuy, Connecticoin, Meltdown, VikingDude, Peaceman, Patches and more.
<< <i>Are you exposing them to ammonia for different durations? >>
<< <i>Food color? >>
Nope and nope
<< <i>
<< <i>Have you been baking them in your oven at various temperatures/durations? >>
No, but you are on the right track
During a trip to the zoo the other day, I learned that the sex of an alligator is determined by the temperature of the eggs during the incubation process. Perhaps these colorful buffalos are related to alligators.
Thank You
SilverDollar
Apropos of the coin posse/aka caca: "The longer he spoke of his honor, the tighter I held to my purse."
<< <i>Take the purple one on the lower right and lightly rub a little skin oil on it with your finger. If the color is removed, down to the golden shade, I will tell you how you did it. >>
I just took one of the purple ones and rubbed it with my finger and the color was indeed removed down to the golden shade.
<< <i>Perhaps these colorful buffalos are related to alligators. >>
I'd like to think that somehow, yes, the colorful buffalos are related to alligators
<< <i>Propane torch????????? >>
Nope
<< <i>Frying pan as mentioned a couple weeks ago >>
Nope
JK
But they do make nice learning tools/conversation pieces!
Camelot
<< <i>Easter egg dying kit >>
Nope, but they do look like easter egg colors
<< <i>100% frying pan heated for about 15 to 20 seconds on the highest heat possible. My guess is that you took the gold one off after only about 11 seconds and it turned golden in the paper plate you let it cool off in. >>
Nope, no frying pan or paper plate was involved. Other than that, you are getting close.
<< <i>Crayola Crayons we used on all the coins. >>
No
we think it involves heat but we don't know exaclty if it's blowtorch or burner or two sticks together or what.
spill it alrready, spud
Liberty: Parent of Science & Industry
I just took one of the purple ones and rubbed it with my finger and the color was indeed removed down to the golden shade. I eagerly look forward to your next post on the matter.>>>>>
Sorry, I forgot to come back to this thread.
The reason I knew that would work is b/c I put a few of these Buffs in my wife's iron skillet a few days ago and heated them. They looked much like yours. I rubbed a little skin oil on the purple ones and it came off and actually produced some rather attractive coins. My best guess for the reason behind this was that my wife sprays a little PAM on the iron skillets before storing them and I think maybe some of the vapors from the PAM contributed to the toning. It was interesting that the side of the coin not touching the skillet toned with color and the side touching the skillet was basically just golden in color.
Anyway, that is what I did and suspect you did much the same.
BTW, I spent my coins instead of putting them on ebay.
Mike
<< <i>spill it alrready, spud >>