Message:

<p>[QUOTE=&quot;John Burgess, post: 7770596, member: 105098&quot;]As far as skipping colors my understanding this had more to do with the sulfur contaminant (how much of it) and length of exposures.&nbsp; </p><p><br /></p><p>Like a non-smoking household, never burns anything, far removed from the kitchen or gas burners may never visibly tone due to less exposure to contaminates in the air, while a smoking household, nearer the gas stove, may have (will have) a higher level of hydrogen sulfide and sulfur dioxide in the air particulates of the house which will contribute to the coin toning given time. </p><p>And opposed, no particulates, low moisture or oxygen, very little toning even over a century. Storing a coin in a nitrogen environment free of sulfides and oxides, and there should be no toning at all for the next forever until it&#039;s opened and exposed. </p><p><br /></p><p>While maybe sticking a silver coin in a sulfide holding container, it may send it to terminal toning in under a minute and skip all of the colors because the exposure is so high. </p><p><br /></p><p>the cycle does show repeating variables of the same colors, as it runs the stages to terminal toning, totally possible I believe to sit at a specific thickness to get a uniform color, and possible to darn near skip colors by blowing past them rapidly. Also possible depending on the coins surface and strike for a coin to build thickness heavier in some areas like fields, and build up lighter on devices. </p><p><br /></p><p>It&#039;s one of the tells for Questionable Color and Artificial Toning, there SHOULD be evidence of a progression over time of the layer buildup in thickness and when there isn&#039;t then it&#039;s likely suspect, uniformity of appearance is likely suspect. It&#039;s not the rule of course, the environment is the factor at play, but it&#039;s an indication of monkey business being afoot&nbsp; when it&#039;s all the same color and doesn&#039;t show signs of any of the earlier stage colors at all. </p><p><br /></p><p>Mostly why the graders will use Questionable Color or Questionable Toning on slabs instead of flat out calling it artificial. It&#039;s suspect, but they can&#039;t prove it conclusively as artificially toned. so they go with the &quot;we don&#039;t like it, it don&#039;t look right&quot; route. </p><p><br /></p><p>One more thing, I&#039;m not an expert, just a hobbyist and learning and reading a lot on this subject recently, because like the original poster, I too have a toning/haze problem to an extent. instead of fighting it anymore I decided to just try to figure it out. </p><p><br /></p><p>I think because this is happening at the molecular level, there&#039;s electron exchanges between the molecules in the air and the molecules of the silver coin or any metal really, no packaging is going to protect a coin forever short of an environment free of oxides and sulfides (for silver) like a vacuum or a air tight vessel that has been pumped full of some other pure gas that isn&#039;t oxygen and won&#039;t give or take electrons from the silver. Toning is an eventuality, maybe not now, may not for 100 years or more, but at some point it&#039;s going to happen unless you are dipping coins to remove it, or just happened upon ideal conditions and got lucky or went to extremes to avoid it happening and even then, it&#039;s probably an eventuality given enough time. </p><p>JMHO.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in