This is a Vintage Lang 12k Gold Filled Double Link Starter Charm Bracelet with a push box locking clasp and safety chain. The bracelet measures 7.5", when closed, and 0.375" wide. Each link measures 0.25" in diameter and has both rounded and flattened areas. The weight is 14 grams. It is marked "Lang" and "1/20 12k G.F." on the back of the clasp. Lang is a jewelry company started in 1946 in Providence, R.I. The exact age of this bracelet is unknown, but it probably was made in the 1960's. This Vintage Lang 12k Gold Filled Double Link Starter Charm Bracelet is in very good condition with minor surface wear to the clasp.