How do you tell if coin was not circulated?

To determine if a coin has not been circulated, check for signs of wear and tear, such as scratches, dents, or discoloration. Uncirculated coins typically exhibit a brilliant, shiny finish and have sharp details, with no signs of handling. Additionally, look for the original mint luster, which appears as a reflective surface. Coins in their original mint packaging or holders are also strong indicators of being uncirculated.