This sweet sweater guard was extremely popular in the 1950's with ladies for all their many cardigans. Sweaters were worn loosely over shoulders and the sweater guard kept it in place. There are two substantial heart shaped charms inset with rhinestones. A double chain connects from the bottom of each heart spanning about 6 inches.  Each heart has a pin enclosure with a safety lock on the back. P & K (Pitman & Keeler) was out of Attleboro, MA operating 1910 -1960. Hearts measure .75" X .75"