I believe that the number Chapman proofs are estimated at less than 50. To stumble onto one without provenance or even a plausible story (bought...
I hope the Blue ridge video mentioned that minor die clashes (like the one pictured in this 4 year old thread) adds very little, if any additional...
Fun with a hydraulic press [MEDIA] [ATTACH]
See if it exactly matches anything on www.doubleddie.com www.varietyvista.com They have comprehensive lists of RPMs. Good sites to bookmark
Did you check www.doubleddie.com www.variatyvista.com They have comprehensive lists of known doubled dies. Bookmark them BTW: As @paddyman98...
That explains a lot :yack: :vomit:
Try Glass/Ceramics. I actually get to say things like Molybdenum Disilicide on a regular basis and people don't laugh :D
Chapman Proofs are exceedingly rare and it is unlikely that you have one. Did you check to see if your coin matches the known die markers?...
Your coin was damaged after it left the mint. Something cut into the coin. It couldn’t have occurred at the mint. Since the scratches are cut...
I would like to know how Ken Potter and PCI authenticate that the plating is brass? If it's based on color, well..... How can they be certain it...
Sorry, but it's just post mint damage. It has heavy scratches and gouges that occurred after it left the mint, possibly from spending time on the...
The specification for pre-1982 copper cents is 3.11 grams +/- 0.13 grams. That means a cent weighing between 2.98 – 3.24 grams is normal. If...
The problem you're going to run into is getting analytical data to support your claims. XRF uses an X-Ray beam that penetrates below the surface...
some of the books I use [ATTACH] [ATTACH] [ATTACH] Edit to add: IMO, the book by Courtney Coffing isnt worth buying, even if it us cheap. It...
@MeowtheKitty is correct. Linear plating blisters
I no longer have the references, but I recall reading years ago that the plasticers + water (humidity) can form HCl as a decomposition product....
Its called the Beilstein test. The green flame is from a copper halide (chlorine in this case) that forms. Better Living Through Chemistry, I...
It's indented, not raised. Nice little strike through. Looks like it could be a wire bristle from a cleaning brush, but it doesn't really...
Damaged. Looks like it was squeezed between something flat. The reverse is probably flattened or shows damage as well. Sorry, but not an error.
A good rule for identifying errors is trying to explain how it could occur during the minting process, not trying to explain/understand how it...
Separate names with a comma.
