Vintage sterling silver Happy Birthday To You charm or pendant. Charm measures 1/2" in diameter X 3/8" high, and weighs 2.7 grams. The charm is marked "WELLS STERLING" on the bottom, and there is a lever to make the charm do something, but I can't figure out what. The top of the cake is hinged and will open. In excellent Vintage condition with very light age appropriate wear.