A grounding technique to reduce stress & anxiety
Take a moment to look at the coin, noticing as many details as possible
Close the coin into your fist. You can choose to close your eyes or relax them
Begin to describe to yourself or visualize as many details as possible: size, weight, temperature, colors, feel, writing, position in your palm, features, etc.
Alternative: you can rub the coin with your fingers trying to feel for the features as you describe them to yourself.