Is this a true statement?

dlimb2

Green Means Go: The toned color green is normally the signature of an original-toned coin.

kryptonitecomics

While I think certain shades of green can be very difficult to duplicate by artificial means.......I have seen plenty of AT coins with green.

dlimb2

How about an emerald green...

dizzyfoxx

I would say of all the colors of the toning spectrum, green is probably at the top of the list of being confidently certain of originality.

Bear

How about green with envy?

Crazy4Coins

So would yellow mean caution?

braddick

<< <i>How about an emerald green... >>

Ahhh... my favorite!

MrSpud

It is true a lot of the time, but not always. The toning progression and the way it blends into other colors and how it sits on the coin also have to be considered. That said, true green and true red are the two hardest colors to deliberately AT. In my experiments I found that the easiest colors to produce are these

The picture above is of the same coin as it was being AT'd (I took each picture every 10 seconds or so during an accelerated toning process). As the film grew thicker it progressed through those colors. The toning on this coin was even and monotone, usually the techniques of AT coins produce an uneven film that shows a gradient or splotchiness (depending on how crude or refined the technique is) but they basically involve these same colors. I think where true red and true green would have appeared that a purple tint interfered and made the red and green not show up (note that there are tinges of red mixed with purple on the fourth one in the top row and tinges of green mixed with purple on the first one in the 2nd row). In other words, I think that green and red appeared but just for a micro-fraction of time in an accelerated toning. A very very slow natural toning would allow these colors to develop though (at least this is my current theory). That said, green and red do sometimes appear on AT, but unpredictably so and not usually. Here are a couple of obviously AT coins I made during my experiments that have green on them.

NgokLi

Red mean stop right?

LeeG

Did someone say green

291fifth

If there is money to be made the color can be artificially created.

There is money to be made.

The color...

DAM

About 15 years ago I attended a seminar on toning. The speaker had numerous AT and NT coins to show us. Some of the "pretty" toned coins were AT. After the seminar I had a good feel for what was AT and some of the ways it could be done. Although it is very hard to discern AT from NT, in some cases almost impossible, I only buy what I believe to be NT.

I seem to recall the color progression on a NT coin is Yellow, Magenta, Cyan. The Cyan would have the green in it.

I'm in no way an expert on toning. Just passing on what I've learned.

Steve27

I seem to recall a certain Peace Dollar that had a lot of green, but I don't think it was NT.

66RB

LeeG, I think someone did say green




Rob

mgoodm3

Green?

66RB

Yes, mgoodm3, green

66RB

<------------------------------------Green

stiffy

Geez, that is a cool progression there, Mr Spud.

airplanenut

Green?