I Love You Heart Charm Layered Over 2004 Penny Keychain, 15 year Anniversary Gift, Birthday Gift, Couples Keychain Perfect for couples 15 year anniversary gift (15 years gift, 15th year gift), or for a best friend gift The US one cent coin is called a penny and is a symbol of luck. Packaged on a card with the saying "What a Lucky Year!" The copper coin is a USA one cent penny 20 mm diameter. Handmade item, engraved, made in USA, net weight: about 5g.