Sapyx ✭✭✭✭✭

To be more specific, they are making minuscule quantities of radioactive gold, the isotope gold-203, which has a half-life of about a minute. This is what the article means when it says "each at… (View Post)

I'm not entirely certain of the difference between this suggestion and an old-fashioned consortium buying a coin? Seems to me a case of just throwing the word "blockchain" in there to attra… (View Post)

Silver is notoriously good at killing microbes and moulds. It won't grow on the coins, and will probably not then spread from the coin to anything else. Acetone would work, but if we're just talking … (View Post)

I'm wondering about the precise definitions here, which can impact US collectors. For example, US-Philippine coinage. Right now, the Philippines is a foreign country being hit by the tariffs, but it … (View Post)

"The surfaces", in terms of the original surface which the silver coin used to have prior to being gilded, are already destroyed. The coin would most likely have been chemically cleaned pri… (View Post)