| Author |
 Replies: 9 / Views: 1,188 |
|
|
New Member
United States
3 Posts |
Was trying to find out some information about this extra metal coin. It's a bicentennial quarter and it seems like there is a big extra blob of metal, I'm not sure if it's extra core metal or extra plating, It also blobs out in the reverse side, but, I ha such a hard time getting my images to 300k that this picture will have to do until I get to my PC. Thanks in advance!  |
|
|
|
Valued Member
United States
461 Posts |
From the picture, it looks like an expansion bubble from being exposed to intense heat. Gases trapped between the clad layers will expand when heated.
|
|
Pillar of the Community
United States
3516 Posts |
Looks like the coin was heated in some way. PSD |
|
Pillar of the Community
United States
4211 Posts |
 and I agree with some kind of heat issue. |
|
Pillar of the Community
United States
2775 Posts |
Quote:
Was trying to find out some information about this extra metal coin. Extra metal is better determined by coin weight. Not by visual appearance alone of something raised like blobs, bubbles or die chips etc...  the coin has felt some heat and altered after strike. Thanks, Doug. Edited by Halo1st
12/28/2016 5:16 pm
|
|
New Member
 United States
3 Posts |
So would this heating be something that happened during the slug process or are we thinking this was post production?
|
|
Valued Member
United States
461 Posts |
Post production....could have been put in an oven or exposed to some other high heat source
|
|
Rest in Peace
United States
17900 Posts |
You could weigh it to be certain, but I'm sure it was heat, too.
|
|
Pillar of the Community
United States
2775 Posts |
Happened after the strike or post strike damage ( PSD). The raised metal should not be considered extra unless it weights more than the normal coin specs for the year. Heat applied after strike will cause gases trapped between the clad layers to expand, forming a bubble like appearance such as this. Thanks, Doug. |
|
New Member
United States
3 Posts |
Thanks guy, I appreciate your responses, I will weigh it but I believe I agree with you all because of how the strike is still visible even where the bubble is indentated
|
| |
Replies: 9 / Views: 1,188 |
|
Posted 12/28/2016 3:30 pm
