Collectible coins such as the 1941 Denver dime, also known as a Mercury dime, are of significant interest to numismatists due to their historical context and minting details. The "10c Roll" refers to a roll containing ten-cent coins, typically holding either uncirculated or circulated dimes. The Denver Mint produced the 1941 dimes with a total mintage of around 20 million, making them relatively common, but their value can vary based on condition and demand among collectors. Key features include the iconic design by Adolph A. Weinman, which depicts the winged Liberty head and a fasces on the reverse.