Bar pin probably gold plated (on side, gold is scratched off). There are three layers to this pin. Top is black enamel filling grooves in the top decorative element (Taille d épargne). Middle is symmetrical, raised, shiny perforated pieces, and bottom is a rectangular piece engraved with flower and leaves. Tube hinge and c clasp, hand made. 1 3/4" long 3/8" Wide