Art Deco Grape Cluster Cultured Pearl Sterling Brooch

Here for your consideration is a nice Art Deco sterling silver grape cluster brooch. I could not find a hallmark but it does test for sterling silver. This looks like an older piece as it has a trombone clasp. It measures about 1 3/4" . The glue around some of the pearls have a yellow tint but otherwise this is in lovely antique condition.