Sapyx ✭✭✭✭✭

The two-headed eagle on the Lubeck coat of arms represents the Holy Roman Empire, which granted Lubeck the status of Free City in 1227. Only later, with the acquisition of the Imperial title by the A… (View Post)

Sort of, yes. The ancient coin is a silver alloy, so is inherently less prone to verdigris /patina formation. However, the encrustation on the ancient would have come from centuries being buried in t… (View Post)

There is a one-word reason why companies are always reluctant to publicly name and shame counterfeiters and counterfeit-sellers: Lawsuits. I assure you, most of these groups (and other groups such as… (View Post)

"Verdigris", as defined by coin collectors, is crusty dark green deposits that form on coins when exposed to corrosive environments. When analysed, verdigris on copper coins is usually comp… (View Post)

Denatonium benzoate is added in tiny amounts (way way less than 1%, we're talking ppm levels) to give the acetone a slightly bitter taste, to prevent people from drinking it. 99.99998% acetone is sti… (View Post)