Historically speaking, most Mercury dime issues from the San Francisco Mint are at least a little challenging in the higher grades. Of course, as enthusiasts know examples struck since 1934 are much more common than their earlier counterparts. And the 1941-S Mercury dime is no exception to this rule, whereby it is essentially as common as its Philadelphia- and Denver-minted counterparts, if not exactly by original mintage then at least by survivorship. Only the top-end examples -- Full Bands specimens grading higher than MS67 -- pose any real challenge to the enthusiast.