Log in or Sign up
Coin Talk
Home
Forums
>
Coin Forums
>
US Coins Forum
>
Have you ever wondered what luster looks like?
>
Reply to Thread
Message:
<p>[QUOTE="TypeCoin971793, post: 3323512, member: 78244"]I recently bought a digital microscope that could magnify objects up to 1600x (maybe not well, but it does work). One of the first things I looked at was a BU Morgan with a light wiping on the obverse.</p><p><br /></p><p>This first image was taken at about 800x. You can see the flow lines expanding radially from right to left. You can also see the hairlines going from top left to bottom right. Note how they go over the E; that's how you can tell that they are not die polish.</p><p><br /></p><p>[ATTACH=full]880866[/ATTACH]</p><p><br /></p><p>Same magnification, just a different area. The flow lines are a bit clearer.</p><p><br /></p><p>[ATTACH=full]880867[/ATTACH]</p><p><br /></p><p>This image was taken at 1600x in the same location as the above image. You can clearly see the ridges that were etched into the die. These ridges reflect the light on one side, which is what causes the cartwheel luster. Also note how the cleaning hairlines disrupt these ridges. That is why an abrasive cleaning will destroy luster.</p><p><br /></p><p>[ATTACH=full]880868[/ATTACH]</p><p><br /></p><p>This image was also taken at 1600x, but 180 degrees from the previous image. There was no cleaning on this part of the coin. The ridges are very clear in this image, and you can clearly see how the light is reflected off of only one side.</p><p><br /></p><p>[ATTACH=full]880869[/ATTACH]</p><p><br /></p><p>I'm sure all of this is already well-published, but I had fun shooting the images so I thought I'd share. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>
[QUOTE="TypeCoin971793, post: 3323512, member: 78244"]I recently bought a digital microscope that could magnify objects up to 1600x (maybe not well, but it does work). One of the first things I looked at was a BU Morgan with a light wiping on the obverse. This first image was taken at about 800x. You can see the flow lines expanding radially from right to left. You can also see the hairlines going from top left to bottom right. Note how they go over the E; that's how you can tell that they are not die polish. [ATTACH=full]880866[/ATTACH] Same magnification, just a different area. The flow lines are a bit clearer. [ATTACH=full]880867[/ATTACH] This image was taken at 1600x in the same location as the above image. You can clearly see the ridges that were etched into the die. These ridges reflect the light on one side, which is what causes the cartwheel luster. Also note how the cleaning hairlines disrupt these ridges. That is why an abrasive cleaning will destroy luster. [ATTACH=full]880868[/ATTACH] This image was also taken at 1600x, but 180 degrees from the previous image. There was no cleaning on this part of the coin. The ridges are very clear in this image, and you can clearly see how the light is reflected off of only one side. [ATTACH=full]880869[/ATTACH] I'm sure all of this is already well-published, but I had fun shooting the images so I thought I'd share. :)[/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
>
Have you ever wondered what luster looks like?
>
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...