2013 Penny Keychain With Engraved"Lucky Us" - What A Lucky Year; Engraved Couples Keychain Perfect for 6 year Anniversary Gift, Couples Keychain The US one cent coin is called a penny and is a symbol of luck. Packaged on a card with saying "What a Lucky Year!" Metal: 2013 Penny, Net Weight: About 20 g. Handmade item, engraved, made in USA, net weight: about 5g.