1960s Trifari White Enamel Asian Gong Pendant Necklace

1960s white enamel Asian gong pendant necklace. The front of the pendant features a white enamel gong marked with four Asian characters. The back of the pendant says, "Happiness is..Love Health Serenity Wisdom" and is signed, "Trifari". The pendant measures 2 1/4" long x 2 1/8" wide and hangs from a 28" chain.