Vintage silver & enamel M&M’s u-shaped keychain

Vintage Mars M&M’s chocolates silver tone metal and enamel u-shaped (letter “U”) keychain. The keychain has a drop length of 4.25 inches (including the chain and key ring) and measures 1.5 inches wide. The top of the keychain has a black enamel background & 5 M&M’s pieces (blue, green, red, orange & yellow) making faces with personality. The corner says M&M’s World on it. Some normal wear with use over time, but in great vintage condition!