A geocoin is a metal coin minted in similar fashion to a medallion, token coin for use in geocaching. Some geocoins are trackable on the internet using a serial number and website address engraved on the coin.
Personal geocoins are a personal signature item bearing the geocacher's handle and personal design, similar to a heraldic device. Geocoins are often minted by caching organizations and as fund-raisers for geocaching events.
They may be placed in geocaches to be found by others and kept as trophies, moved from cache to cache like a Travel Bug, traded, given to other cachers like a calling card, or merely sold and collected.