Thank you for your interest in Coinstar. Regarding your inquiry of buying back coins, Coinstar is not in the business of selling coins as it is time consuming for Coinstar and our Service Providers. In addition, Coinstar's patented technology allows our processors to filter out foreign coins and does not accept Eisenhower silver dollars, Sacagawea coins, 1943 steel pennies and pure silver coins, which coin collectors are commonly in search of.