I don't recommend it. I've done that to regular, common copper cents long ago. It oxidizes a fairly thick layer of the coin's surface to copper...
I've been playing with the 3D model on the linked page, and now I'm a little seasick. :yuck: If you zoom into the surface of the model, it turns...
I'm trying to keep up, but it's very difficult. When did "Chinese" stop being a term for a nationality, and become strictly a term for a "race"?
All the other US gold coins at the time had reeded edges. So did most silver coins (the twenty-cent being a notable exception). People expected...
Sounds very much like an unstruck planchet to me: upset rim (so not a blank) smaller diameter (the diameter increases slightly as metal is forced...
Sure does. [ATTACH] Since you get "veins" of gold, you'd think you'd get "veins" of mercury too, but apparently not: Edit: finally got the...
Well I certainly hope it doesn't grow one of those things in the foreground!
You're blessed. I really, really wish I could show my grandparents some of the coins I have now. They did a lot to encourage my interest in the...
Still hate the laser-pebbled finish, but I do like that design. A lot. I thought the Maya design was just okay, until I got one in my change at...
Most of platinum's superpowers are chemical in nature -- low bulk reactivity, fancy catalytic properties -- and the vacuum of space is pretty much...
One problem for space applications is that it is so dense, which translates to heavy, which translates to expensive. Launching a kilo of platinum...
From the linked story: They weren't posing as dealers or customers at that point. They were fleeing. Successfully, at least for now.
Oh, absolutely. It's a super-special metal, and even though there are entire chemistry careers devoted to "find something that works as well as...
;) Yeah, but those relative values are transient. Not too long ago the proportions would've been Gold $100, Platinum $200, Palladium $50....
Thick! The same diameter as an ASE? Do they specify whether it's a troy ounce (31.1g) or an avoirdupois ounce (28.3g)?
It doesn't occur naturally in Earth's crust as a free metal. Some do, like gold, silver, platinum, mercury, copper; some don't, like aluminum,...
That lower-left position is where I imagined seeing them, but I'm pretty sure I could make out any other arbitrary pair of letters if I...
I got a batch of dug Mercs a few years ago that included a 1926-S with XF details. I almost doubled my money from the batch with that one coin,...
Beat me to it. At the very least, get that coin into a protective flip, stat. Also mind the 1919-D; it's worn, but still a better date. This is...
Metal forced into the devices is work hardened as it flows. This makes it both physically harder and more resistant to chemical attack. At least,...
Separate names with a comma.
