Add Yahoo as a preferred source to see more of our stories on Google. A Gold Rush-era coin worth $25,000 will be among the 10 hidden across San Francisco for Witter Coin's annual scavenger hunt.

Witter Coin is hosting its third annual scavenger hunt across San Francisco, doubling the total prize value to $50,000 this year. Participants will search for 10 hidden coins, including a rare 1851 ...

Collectors searching through pocket change and bank rolls are pulling coins worth hundreds or even thousands of dollars, and the hunt centers on a short list of known error varieties that the U.S.