The coins feature Stoic quotes from Marcus Aurelius, Seneca and other Stoic philosophers. They are perfect for the practicing Stoic, daily Stoicism reflections and Stoic living. The Stoic challenge coins are designed to assist with your daily Stoic practice and contain the most popular teachings on Stoicism for inner peace and living a meaningful life. The set includes a Momento Mori Coin, Amor Fati Coin, Cardinal Virtues, Summum Bonum, The View From Above and The Inner Citadel. Each coin is inspired by some form of Stoic wisdom.Due to the unique nature of the electroplating process of the coins, there may be a slight color variation between coins. Each challenge coin is 38mm diameter and 3mm thick. They sit perfectly in their presentation boxes and are best displayed on your desk, by your bed or somewhere else they will be noticed often.