Log in or Sign up
Coin Talk
Home
Forums
>
Coin Forums
>
Coin Chat
>
My Experiment using MS70 Coin Brightener.
>
Reply to Thread
Message:
<p>[QUOTE="bigjpst, post: 3708662, member: 21015"]It's been a while since I posted on this forum. I originally had this idea for a thread and posted on a tpg forum where I usually spend my time. Unfortunately it didn't last long. </p><p><br /></p><p><br /></p><p> There was a discussion there several months ago about whether or not blue and purple colorfully toned copper is AT or if when coincare or MS70 are applied to the surface of UNC brown copper coin the surface contaminants or brown tone is removed to reveal the colorful blue and purple toning underneath. Some of the biggest names in copper coins were arguing on both sides so I bought some MS70 thinking I would experiment. The bottle sat on my shelf for months and I finally got around to it. I don't claim to be a chemist and others might be able to explain what is happening better than I can, but it seems to me that the MS70 is not applying any color to the surface, but reacting to certain surface toning to change the color. </p><p>Some of the coins had no change other than to appear brighter, while others changed color completely. </p><p>A member on the other forum suggested the color change is also reversible, but the thread got pulled before any explanation was given. </p><p>My main goal is to start a discussion about whether or not this type of treatment is considered market acceptable(because there are many similarly toned coins in tpg holders) and also to gain some insight into what coins are supposed to look like and how different chemicals affect the coins. </p><p><br /></p><p>[ATTACH=full]994077[/ATTACH] [ATTACH=full]994078[/ATTACH] [ATTACH=full]994079[/ATTACH] [ATTACH=full]994080[/ATTACH] [ATTACH=full]994081[/ATTACH] [ATTACH=full]994082[/ATTACH] [ATTACH=full]994083[/ATTACH] [ATTACH=full]994084[/ATTACH][/QUOTE]</p><p><br /></p>
[QUOTE="bigjpst, post: 3708662, member: 21015"]It's been a while since I posted on this forum. I originally had this idea for a thread and posted on a tpg forum where I usually spend my time. Unfortunately it didn't last long. There was a discussion there several months ago about whether or not blue and purple colorfully toned copper is AT or if when coincare or MS70 are applied to the surface of UNC brown copper coin the surface contaminants or brown tone is removed to reveal the colorful blue and purple toning underneath. Some of the biggest names in copper coins were arguing on both sides so I bought some MS70 thinking I would experiment. The bottle sat on my shelf for months and I finally got around to it. I don't claim to be a chemist and others might be able to explain what is happening better than I can, but it seems to me that the MS70 is not applying any color to the surface, but reacting to certain surface toning to change the color. Some of the coins had no change other than to appear brighter, while others changed color completely. A member on the other forum suggested the color change is also reversible, but the thread got pulled before any explanation was given. My main goal is to start a discussion about whether or not this type of treatment is considered market acceptable(because there are many similarly toned coins in tpg holders) and also to gain some insight into what coins are supposed to look like and how different chemicals affect the coins. [ATTACH=full]994077[/ATTACH] [ATTACH=full]994078[/ATTACH] [ATTACH=full]994079[/ATTACH] [ATTACH=full]994080[/ATTACH] [ATTACH=full]994081[/ATTACH] [ATTACH=full]994082[/ATTACH] [ATTACH=full]994083[/ATTACH] [ATTACH=full]994084[/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
>
Coin Chat
>
My Experiment using MS70 Coin Brightener.
>
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...