Quick, take the money and run. o_O
Agree. Environmental damage. You can see pitting on the obverse as well
If you carefully place concentrated acid on the surface of a clad coin (I can't remember if I used Nitric or sulfuric acid) and add a little more...
The die is also basined (slight curvature) to help push the metal outward equally in all directions, more or less. As Dave posted, there is less...
The planchets move along a vibrating table that has holes slightly smaller than the diameter. Anything smaller (clipped planchets) fall through...
I saw that report show up on one of my searches, but didn't see anything in the title that would warrant searching through 200+ pages. Thanks for...
As long as the copper plating isn't breached, the coin should behave like any other copper coin in a slab. Even if there are microscopic breaches...
Somewhat related to the topic. Does anyone have info on the copper thickness specs on plated planchets? I've seen numbers ranging from 8-20...
It suffered Environmental damage after it left the mint. Probably a metal detecting find since it looks like there is still some soil residue on...
Agree with lamination. Nice close up photo
It looks like a deteriorated die. However, it may also have a filled die error around the date area. I don't think a deteriorated die would wash...
I bought a few groups lots of these about 20 years ago with the same idea of putting together a date set. I kept the diff dates and sold the...
Thanks for the explanation. It answered my concerns. I probably should have been a little more tactful on this
@Mark Metzger. You just posted a link to your ebay sale and this coin was listed. Based on your ebay user name and large listing it looks like...
The ink didn't soak through, it was transferred from the sheet printed right before this one. Sorry, but it's too minor to add any value.
Koln Archbishopric. KM 148. 1754IK (single year type)
Looks like it may have a little PVC residue from an old flip. You may want to give it a quick acetone rinse to remove the acidic green slime.
Koln - 6 Mariengroschen. 1700's. Can't make out the date. Don't have my references handy so someone else will have to give you the KM number and...
Looks a little more like a die gouge, but I've been wrong before :facepalm:
In my opinion, I don't think there is a significant premium for common Series 2013 sequential notes, regardless of the number. If you looked hard,...
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