These high-quality gold-filled beads are strung on a metal chain, and so will never need to be re-strung. The necklace is mid-century, anywhere from 1930 to 1970 in age. The clasp is marked "Taylord" and "1/20 12K gold-filled." These beads are in excellent original condition with no apparent wear on the gold layer and a nice luster. They measure 16" long. The largest bead is 3/8" in diameter, the smallest 3/16."