Steel Disc Engraved With"Lucky Us" With 2009 Penny Layered Keychain With Heart Around Year; Engraved Couples Keychain Perfect for couples 10 year anniversary gift (10 years gift, 10th 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 and the steel disc is 30 mm diameter. Handmade item, engraved, made in USA, net weight: about 10g.