Log in or Sign up
Coin Talk
Home
Forums
>
Coin Forums
>
US Coins Forum
>
How to Detect Cleaned Coins
>
Reply to Thread
Message:
<p>[QUOTE="TypeCoin971793, post: 3244258, member: 78244"]Important notes on color for cleaned coins:</p><p><br /></p><ul> <li>Shiny and glossy surfaces are bad (NOT to be confused with Lustrous or Prooflike). Naturally-toned circulated coins will have dull surfaces.</li> <li>Rainbow toning on circulated coins in areas without luster is bad because that means that the surface was messed with to make it more reflective to induce thin film interference.</li> <li>White or pale grey on pre-1878 silver coins is usually bad because the environmental conditions of the time strongly induced toning.</li> <li>Darker toning (NOT DIRT) around the devices is usually bad. This is the result of a previous patina being removed, and the cleaning device not being able to reach the area immediately around the devices. The change must be sudden and drastic. Circulation can mimic this effect, but the change would be gradual.</li> <li>Orange and Pink on copper coins is BAD. Copper just does not tone these colors.</li> <li>Black on coppers is BAD. This is the terminal state of a copper coin with cleaned surfaces.</li> </ul><p>Here is an example of a silver coin with pale, glossy surfaces from a cleaning:</p><p><br /></p><p>[ATTACH=full]850008[/ATTACH]</p><p><br /></p><p>Here is an example of a silver coin without luster having rainbow toning. This coin has been cleaned or dipped.</p><p><br /></p><p>[ATTACH=full]850009[/ATTACH]</p><p><br /></p><p>The blast-white appearance of this seated half without luster is indicative of it being cleaned. The dealer I was considering buying this from said he dipped it himself and it has no luster.</p><p><br /></p><p>[ATTACH=full]850010[/ATTACH]</p><p><br /></p><p>Here is an example that has a dark halo around the devices from a cleaning which did not successfully remove all of the patina around the devices.</p><p><br /></p><p>[ATTACH=full]850011[/ATTACH]</p><p><br /></p><p>This cleaned copper coin has a glossy orange color</p><p><br /></p><p>[ATTACH=full]850013[/ATTACH]</p><p><br /></p><p>The glossy black surfaces on this copper coin indicate an old cleaning.</p><p><br /></p><p>[ATTACH=full]850014[/ATTACH][/QUOTE]</p><p><br /></p>
[QUOTE="TypeCoin971793, post: 3244258, member: 78244"]Important notes on color for cleaned coins: [LIST] [*]Shiny and glossy surfaces are bad (NOT to be confused with Lustrous or Prooflike). Naturally-toned circulated coins will have dull surfaces. [*]Rainbow toning on circulated coins in areas without luster is bad because that means that the surface was messed with to make it more reflective to induce thin film interference. [*]White or pale grey on pre-1878 silver coins is usually bad because the environmental conditions of the time strongly induced toning. [*]Darker toning (NOT DIRT) around the devices is usually bad. This is the result of a previous patina being removed, and the cleaning device not being able to reach the area immediately around the devices. The change must be sudden and drastic. Circulation can mimic this effect, but the change would be gradual. [*]Orange and Pink on copper coins is BAD. Copper just does not tone these colors. [*]Black on coppers is BAD. This is the terminal state of a copper coin with cleaned surfaces. [/LIST] Here is an example of a silver coin with pale, glossy surfaces from a cleaning: [ATTACH=full]850008[/ATTACH] Here is an example of a silver coin without luster having rainbow toning. This coin has been cleaned or dipped. [ATTACH=full]850009[/ATTACH] The blast-white appearance of this seated half without luster is indicative of it being cleaned. The dealer I was considering buying this from said he dipped it himself and it has no luster. [ATTACH=full]850010[/ATTACH] Here is an example that has a dark halo around the devices from a cleaning which did not successfully remove all of the patina around the devices. [ATTACH=full]850011[/ATTACH] This cleaned copper coin has a glossy orange color [ATTACH=full]850013[/ATTACH] The glossy black surfaces on this copper coin indicate an old cleaning. [ATTACH=full]850014[/ATTACH][/QUOTE]
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
Coin Talk
Home
Forums
>
Coin Forums
>
US Coins Forum
>
How to Detect Cleaned Coins
>
Home
Home
Quick Links
Search Forums
Recent Activity
Recent Posts
Forums
Forums
Quick Links
Search Forums
Recent Posts
Competitions
Competitions
Quick Links
Competition Index
Rules, Terms & Conditions
Gallery
Gallery
Quick Links
Search Media
New Media
Showcase
Showcase
Quick Links
Search Items
Most Active Members
New Items
Directory
Directory
Quick Links
Directory Home
New Listings
Members
Members
Quick Links
Notable Members
Current Visitors
Recent Activity
New Profile Posts
Sponsors
Menu
Search
Search titles only
Posted by Member:
Separate names with a comma.
Newer Than:
Search this thread only
Search this forum only
Display results as threads
Useful Searches
Recent Posts
More...