Vintage 8 Shell Cameo Bracelet

One of four carved shell cameos I am listing. All purchased from the same owners estate. This bracelet is very tarnished and I am not sure if the setting is 800 silver or not. There is a hallmark that I could not identify or photograph. See photo with hallmark and my drawing. The eight shell cameos are all bezel set. The bracelet measures 7" in length. Each cameo is approx. 5/8" by 1/2" not counting the setting. Guaranteed to be original and pre 1950. Condition is very good. Free shipping USA only. Insurance extra. See all my many other great listings.