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 ...

The next time you toss a quarter into a gumball machine down at the local grocery store, think about this: That piece of gum ...

A sum of $3.84 million was paid by GreatCollections to acquire the Duckor example of the 1927-D gold $20 double eagle, a high ...