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<p>[QUOTE=&quot;Kryptonitecomic, post: 960773, member: 26784&quot;]I can pretty accurately guestimate the cause of the toning on most morgans due to knowing the common storage conditions....example....when you see a coin like the cats eye toned 1896...that is a bag toned morgan and the toning form due to parts of the obverse being exposed to the side of the canvas bags they were routinely stored in...if you get a crescent rainbow along one side then that means that part of the surfaces was touch the bag and part of the surface had another coin stacked in front of it. Over 60-100 years these bags were moved and coins tended to shift so sometime those crescent toned coins would moved slightly thus making the untoned side opposite the crescent be exposed to the bag....two crescents formed at different times gives you a catseye toner. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /> As far as tiny untoned spots on coins like the green 1884-O....lots of reasons why that can happen but in most cases something got on the surface of the coin which impeeded or prevented toning from forming on those small spots. A lot of theories surround possible grease or lubricant splattering onto coins at the mint either during the striking process or just before during the planchet preparation. Also there were different rinses used on the planchets so rinse residue could be responsible for some.....furthermore something could have gotten onto the mint bags when they were sealed up. Lots of theories but those are a few of the common ones. The rainbow toned 1884-O with the golf ball like dimples of untoned spots is called a textile toned Morgan. These are considered by most to be extra special as it take a long time being mashed up against the side of the bag and the right environmental conditions to produce a coin like that which is why I bought that one. It is rare to see almost the entire obverse covered in textile and what you are actually seeing is the weave of the cloth bag where high points of the threads did not come into direct contact with the surface while the lower parts did so the high points form the little untoned dots you see. I don&#039;t have any examples of album toned coins or end rollers but those are two other kids of popular toned Morgans along with envelope toned and they all have distinct attributes that allow those of us who study storage conditions to tell 95% of the time how the toning formed.&nbsp; Hope that answers your question.[/QUOTE]</p><p><br /></p>

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