Sterling Silver Genuine Fossilized Ammonite Toggle Bracelet

Large and heavy sterling silver bracelet is signed but it is illegible to me, and features two fossilized Ammonites each measuring about 1 1/2 inches by about 1 1/4 inches wide, with three large Turquoise colored stones which I believe may be Howlite. It offer adjustable lengths from about 7 1/4 - 8 3/4 inches and it is very heavy weighing 96.8 grams. It is in great vintage condition.