Collectible Coins - Since coins were first minted, collecting rare coins and currency have fascinated numismatists (coin collectors) of all ages around the world. Whether you collect coins for a fun family hobby or are a serious rare coin collector, it is both fun and profitable. US silver coins can be a good investment because of the high precious metal content. US mint coins continue to rise in value and popularity. We are unable to suggest potential coin values or recommend a coin price guide.