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<p>[QUOTE=&quot;GDJMSP, post: 1000233, member: 112&quot;]I&#039;m sure you know that it&#039;s not sheets of silver that are placed in the annealing furnace, but individual planchets. And no, it is not an assumption, it is a fact. They do go through the same annealing process. The planchets for Morgans and for Peace dollars were identical - same diameter, same thickness, same metal alloy. </p><p><br /></p><p>The OP&#039;s original question was if the different heat source - wood vs gas - was a possible reason for the lack of Peace dollar rainbow toning. Now logically a person might think so. But that reasoning would also mean that all other coins annealed with gas heat would not have rainbow toning either. But they do have rainbow toning. So logic dictates that gas heat is not the reason. It had to be something that was specific to the Peace dollars. And the only there is that was specific to the Peace dollars and to no other coins was the die preparation that resulted in them having a unique type of luster. No other coin minted , before, during, or after the time Peace dollars were struck had the same type of luster that Peace dollars do. And since Peace dollars are the one and only coin there is (other than gold) that is not commonly found with rainbow toning then logic dictates that their unique type of luster must be the reason for their lack of it.</p><p><br /></p><p>Now you can say what if till the end of time if you wish. But what I have related above is solid reasoning.[/QUOTE]</p><p><br /></p>

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