Vintage Sterling Locket Art Nouveau Etched Flower MCM

Older sterling silver etched floral art nouveau design on this romantic locket. Minimal wear; doesn’t look like it’s actually had a photo inside. At least one plastic covering is present (perhaps both.) I can’t tell. The original fabric inserts are present in both. Approximately 1.5” (including the bail,) which is stamped 925 in tiny script for sterling silver.