George V Gold Sovereign is considered to be one of the rarest British coins of the 20th century - and can fetch up to £30,000 ...

While third-party grading services and their population reports have helped collectors gauge rarity, the costs of grading have influenced which coins get submitted—introducing biases that numismatists ...

Reformers in the Republican Party, which dominated national politics in the 1860s and 1870s, had been calling for a ...