The product is a lot of 20 circulated 1940-1942 Mercury dimes, with a mix of P, D, and S mint locations. These dimes are business strikes from the years specified, making them a valuable addition to any coin collection. Each dime is ungraded and uncertified, adding to the variety and authenticity of the lot. With a focus on the mint locations and strike types, this lot offers a unique and diverse selection of US coins from the specified time period.