I think deliberate attempts to make sure everything was cameo started later in the '70s, but the big change came in 2006, first on the ASEs when...
The only value it would have to me would be in a Dansco, and if it's not even round, then it won't fit, so I wouldn't want it.
Start of by buying a Red Book (Guide Book of United States Coins). Get the spiral one if you like to lay a book on a desk and read it, the...
PL. The weaker side determines the designation with all grading services. Because of the way dies are used, there are also coins that are DMPL...
That's a pretty wide open question. What interests you?
The diameter limitation is surprising. I know in the small holder days, they explicitly said they wouldn't do the Pan-Pac $50s (43.5 mm round, 46...
I was actually going to guess "Not Very Good," but Bill's grade is also accurate.
Put it in an Air-Tite, then mount the Air-Tite in a shadow box. If an Air-Tite is too big looking, then use a Kointain. Don't mount it without...
The magazine has some well-researched articles that are a touch above the kind you find in Coin World. NGC submissions, Hugh Wood insurance,...
I'll be at table 845 from Thursday through Saturday.
That's why I used the thickness of the coin, not the diameter. The calculation across the diameter is more complex and a bit "calculusy."
I don't think so. The 1.59e-8 ohms/meter is for something with a cross-section of 1 square meter. The cross section of the wire is 1 millionth...
Absolutely knife cuts.
Your lights aren't high enough. You have too much light coming at a lowish angle from 11:00 to 1:00. Look at the T in TRVST. The top edge of...
Drawn out to a wire with a uniform 1 sq. mm cross-section, a silver dollar would be 2.736 m long. The resistance of copper would be 46 milliohms,...
Here's a table of resistivity of different metals. I think the only way you could measure the difference between a silver dollar made from silver...
I was also thinking it was a "Secure Plus™" image, but the holder type says "standard" rather than "secure." Even so, this falls woefully short...
I'll say 65. There is a bit of chatter on the cheek and left obverse field, but consistent with what I see being called 65. Attractive toning...
These are graded mostly by the reverse. I see F15 details, but with environmental damage if all that black is corrosion and not dirt. Is the...
Damage to the coin on the mint mark deformed it.
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