Silver dollar collectors are wild about proof silver dollars. These coins have very low mintages (typically less than 1,000 pieces). They are specially struck on polished planchets, and unlike their business-strike counterparts, they sport beautiful high-luster mirror surfaces. Typically, the only proof US silver dollars available to coin collectors are proof Seated Liberty dollars, proof Trade dollars and proof Morgan dollars. While the majority of these coins were struck in Philadelphia, a small number were struck at branch mints, i.e. New Orleans, San Francisco, Denver, and even Carson City. Assessing the value of silver dollars in proof condition requires expert knowledge.