This is a child's dimestore toy Western or cowboy themed charm bracelet from 1950s Japan, still attached to its little paper hanger card. The four charms are a gun or pistol, a cowboy boot, an Indian on horseback, and a cowboy face in a horseshoe. The charms are thin stamped tin or steel (a magnet sticks to them, but not to the silvertone chain).
The bracelet measures 6-3/4 inches long end to end. The applied black painted "patina" of the charms may have some age wear, but I'm sure it didn't cover the charms entirely when it was manufactured. Otherwise the bracelet appears never used.
1950s Japan Toy Western Charm Bracelet on Original Card