For your consideration is this nice circa 1930s necklace. It has lovely open work and is adorned with marcasites. I do not see a mark but it has tested and is guaranteed as sterling silver. It has a great patina that adds to the look. It has a nice paper clip chain.
It measures 16 and 1/2 inches in length. The center two piece lavalier design measures 2 inches by a hair under 1 inch so it is a nice size.
Condition is fully functioning excellent.