The term "10c Roll" refers to a roll of dimes, specifically 50 coins totaling $5. Dimes in the United States, denoted as 10 cents, have various types, with different historical and collectible significance. The 1968 Denver dime, minted in Denver, is part of the Roosevelt dime series, introduced in 1946. While not necessarily rare, dimes from this era can still attract interest among collectors, particularly in uncirculated or high-grade conditions.