Scallop Seashell I Solid Brass Paperweights I Pair

This is a pretty pair of older, solid brass, scallop (I think?) seashell paperweights with patina. There were once felt protectors on the bottom, now gone. Individually photographed, top and bottom, in photos 4-7. They measure approximately 2.75" x 2.75", photos 8-9. Make unknown