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<p>[QUOTE="Kryptonitecomic, post: 1053456, member: 26784"]Actually it has to do with the flow of metal on the surface at the molecular level which alters the surface metal around the date and legend as those areas see the most metal flow since they essentially turn liquid due to the intense heat created by the pressure being exerted by the press. This distrubed metal if you well does not tone as readily as the surounding surface hence the untoned shadow. This phenomenon seems to primarily happen with bag toned morgans and you will rarely if ever see it on album, end roll, envelope toned examples which I think points to the time it takes for the toning to develop being a key ingredient. Coins exposed to high concentrations of sulfer directly touching the coins surface tend to tone across the entire surface while coins within a low sulfer environment who only come into contact with sulfer via outgassing if you will tend to feature the shadow.</p><p><br /></p><p>Pull away toning is actually quite different and refers to toning that is pulled off the surface of a coin due to it being stuck to the side of a bank bag for decades. When the coin is removed from the bag pieces of the toned silver sulfide at the surface actually flake off leaving a color muted or dull surface underneath usually surounded by vibrant neon colors. As stated.....the untoned shadow around the date and mint mark is a very very good sign that the coin is NT if anyone even had doubts.</p><p><br /></p><p>Here is an example of pull away toning:</p><p><br /></p><p><img src="http://i231.photobucket.com/albums/ee194/Kryptonitecomics/Consignments/Consignments4287.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>
[QUOTE="Kryptonitecomic, post: 1053456, member: 26784"]Actually it has to do with the flow of metal on the surface at the molecular level which alters the surface metal around the date and legend as those areas see the most metal flow since they essentially turn liquid due to the intense heat created by the pressure being exerted by the press. This distrubed metal if you well does not tone as readily as the surounding surface hence the untoned shadow. This phenomenon seems to primarily happen with bag toned morgans and you will rarely if ever see it on album, end roll, envelope toned examples which I think points to the time it takes for the toning to develop being a key ingredient. Coins exposed to high concentrations of sulfer directly touching the coins surface tend to tone across the entire surface while coins within a low sulfer environment who only come into contact with sulfer via outgassing if you will tend to feature the shadow. Pull away toning is actually quite different and refers to toning that is pulled off the surface of a coin due to it being stuck to the side of a bank bag for decades. When the coin is removed from the bag pieces of the toned silver sulfide at the surface actually flake off leaving a color muted or dull surface underneath usually surounded by vibrant neon colors. As stated.....the untoned shadow around the date and mint mark is a very very good sign that the coin is NT if anyone even had doubts. Here is an example of pull away toning: [IMG]http://i231.photobucket.com/albums/ee194/Kryptonitecomics/Consignments/Consignments4287.jpg[/IMG][/QUOTE]
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