Your coin looks like there is a ridge of raised metal on the right side. You have the coin in hand so you need to objectively look and confirm...
I was able to find some data for the vapor pressure of phthalates (the plasticizer that reacts with moisture to form hydrochloric acid). Vapor...
I believe the recommendation is to do the XRF as a screening. There's a good probability that it can determine if it's 75Cu25Ni or plated. If it...
To add to what @-jeffB said, the US mint made 75%copper, 25%Nickel planchets for Argentina in 1919 and 1920. This is the same comp as the US...
I'm leaning towards plating problems, not roller marks
Like some others, I have no idea why the OP is whining and complaining. Every time I've bid at HA, the fees and shipping are always noted. It's...
Sorry, I guess I misread your previous post. it is simply a fact that PVC that has the damaging softening agent in it off-gasses, puts of gasses....
Sometimes, when you get to the point that you think you need to talk to someone, that's usually a good time to find a trained person to talk to....
I would also mention that it is simply a fact that PVC that has the damaging softening agent in it off-gasses, puts of gasses. And this is easily...
Is the odor From the PVC or from the plasticizer? It's the plasticizer that reacts with warm moisture to form hydrochloric acid
Hoping you find the way out of that dark place. Zippy Kitty sends her thoughts and prayers Zippy Kitty wasn't pleased with her Halloween costume....
There is absolutely nothing wrong with collecting what you like regardless what others say/think. They key, however us understanding what you...
The discussion was not regarding the safety of PVC flips. It's acknowledged that PVC flips SHOULD NOT be used to store coins and that hasn't been...
Minor misaligned dies (MAD) Not off center. Due to die set up variations. No added value
Debris filled die error
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Die related defects are considered varieties, not errors. This includes doubling, cracks, and chips. Since a variety is caused by a die, it will...
The picture quality is too poor to tell for certain. If the lines are recessed into the field, they are scratches, if they are raised, it's...
This is the correct explanation along with Mr. Weinberg's earlier post. If you measure the diameter of the largest diameter, you should find that...
How can 2 separate printings ( black plus green serial number) get transferred together? Wouldn't the image be reversed if it was a wet ink...
Separate names with a comma.
