As with just about any asset, a coin’s value is determined by its market demand. This means that coins in short supply often see higher demand — and higher values. With coins, supplies are limited ...

Brits have been urged to look out for four words on their £2 coin that could make it worth “30 times its value”. This phrase ...

Errors increase the value of collectibles because a limited number go into circulation before it is spotted and corrected. This Georgia quarter is a big one.

A manufacturing error on the 1999 Georgia state quarter has increased the coin’s value, and some collectors are paying as ...