Toning Natural Or Artificial? How Can You Tell?

I'm pretty sure it's artificial.

Full toning on both sides rarely ever happensto a coin, let alone four.

What's the composition of Australian coins nowadays?

Canadian coins have a steel core with layers of copper and nickel - it would take some work to turn those a funny colour.

Yep these are all AT. I took a really great class from Bob Campbell at an ANA Summer Seminar. He is one of the best when it comes to deciphering AT vs real toning. His class is on video/DVD and I've seen it on ebay for sale, might want to look into a copy. It is also available from the ANA Library for free if you are a member.
Following is a little excerpt from another web page;
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In his video How to Tell Artificial Toning on Coins, available for loan from the American Numismatic Association, Campbell says the following are AT tip-offs:

Circular toning spots resulting from the beading of the toning liquid that was used.
Colors that blend together out of sequence. With naturally toned coins, the progression is yellow then magenta (pinkish red) then cyan (blue-green).
Toning that appears only on the tops of the lettering and devices and not in the coin's recesses.
Wild "circus" colors -- on 90 percent silver coins, for instance, army green, bright pumpkin orange, and robin-egg blue.

According to PCGS's book Coin Grading and Counterfeit Detection, the following are other indications of artificial toning:

The toning floats on the surface of the coin rather than having depth and being bonded to the metal.
The toning occurs over hairlines or other marks.
The toning exhibits bright "crayon" colors.
The toning has a yellow-brown, smoky appearance, indicating it was caused by cigarette or cigar smoke.
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Hope that helps somewhat.

Thanks for all the info, I am still hopeful, I have a few toned Morgan dollars and have compared them. I can't tell the difference. I did see on a couple of the quarters the area A and R in the word QUARTER the coin is not toned. If it is artificial wouldn't the whole coin even in the low spots be toned as well? On one of my Morgan dollars graded by PCGS some of the high surfaces are not toned. I will have to take them to a coin show one day. Thanks CCF glad to have found this forum.