element159 ✭✭✭

I never metal detected, but I did visit the Delaware Mine near Copper Harbor, and you could search the ground for bits of copper, I took home a few. This part of the world has some of the best native… (View Post)

I think they will disappear quickly. Businesses will stop ordering them to make change, since there won't be enough available, so rounding to 5 cents for cash transactions will become nearly uni… (View Post)

Thanks for posting better pictures. I am not familiar with Utah currency, but I suspect that yours is a more modern fantasy, and not an actual issued note. According to Don Kelly, Obsolete Paper Mone… (View Post)

That AI answer is completely wrong. The effect is just the same as Newton's Rings. You can get a very thin gap between the Mylar layers, so thin that it is only a few times the wavelength of lig… (View Post)

That 'parchment' paper is a giveaway, as are the signatures that are printed in the same black color as the rest of the design. (Signatures were usually handwritten, typically in brownish i… (View Post)