Shut up. :P A sandpaper-like finish is usually a very_bad_thing. Some Proofs and bullion coins were/are issued with what's called a Matte finish,...
Um, he doesn't know as much about the striking process as you do. That's why he's asking. They ask, we answer. You should know how it works by now. :)
"Heat" and "pressure" have specific definitions in engineering, and as an engineer you use those words in their appropriate context. You don't say...
1878-CC would be no different than any other Morgan issue with regard to PL and DMPL examples. It is reasonable to assume that every original die...
A Conditional Rarity is a Conditional Rarity. And they minted 600 million Morgans.
I had the impression from the rims that it had been encased.
Well, sixpenny (2") nails come about 215 per pound, and a pound box is about $3.50. So about 1.62 cents per at retail.
It gets the details across. The lack of fidelity of the surface appearance doesn't really get in the way when discussing variety features like die...
Looks like the product of some USB scopes. No, it's not a dSLR shot, but it makes the point. :)
Send it to messydesk - John Baumgart - who posts here at CT. He has as much stature (and expertise) in the world of VAMs as anyone aside Leroy Van...
There are, beyond any shadow of a doubt, more of these circulating as fakes than were originally minted. 4 reverse dies were used for the real...
Every single day on Ebay, a thousand times more damage occurs from counterfeiting than Dan Carr will ever have the reach to duplicate. It's...
That's why it's expert-level stuff. It can and will sandblast the surface of a coin, and it's more likely with nicer fields than worse ones...
There's a couple of double-denomination strikes in that auction which are far more interesting.
Yes. For numismatic use, you'd want one in the higher frequency ranges - 80kHz and up - as they create finer bubbles capable of cleaning tiny...
Well, the PCGS Registry has more Major Sets listed for Ikes than Morgans. Morgans have far more Specialty Sets because of VAMs, but I almost...
Well, the physics of cavitation are pretty well known; here's something from an ultrasonic cleaner manufacturer:...
See, that's the part you're getting wrong. It's not just our opinions, and every single numismatic reference disagrees with you. Every. Single....
Well, once created die chips don't refill, and to the best of my knowledge the chips on your coin are not known for VAM-2A. So it has to be either...
Ultrasonic cleaners work using collapsing cavitation bubbles in liquid. They're tiny, but the bubble collapse generates 5000 degrees Centigrade...
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