Unbranded Vintage Cold Enamel Mesh Butterfly Brooch AB Rhinestone Bow Rhodium Plated 1950s

This is a gorgeous vintage rhodium plated brooch from the 1950s/1960s featuring a beautifully painted/enameled butterfly and leaf in various shades of blue, green, and cream, with a blue rhinestone AB bow at the bottom. The maker's mark appears to be a series of dashes, and the only information I could find online suggests that the mark is a factory mold alignmet mark used by prominent mid-century manufacturers. In the 1950s, complex pieces like this were cast in separate pieces—the mesh wings, the rhodium frame, and the rhinestone bow were all molded individually. The dashes were cast into the mold so the factory workers on the assembly line could instantly align the pieces perfectly before soldering or gluing them together. Because this piece is unsigned and relies on factory dash marks, it likely originated from one of the major Rhode Island costume jewelry giants who specialized in unbranded wholesale lines for department stores. The gray underside is the raw base metal—often a zinc alloy known as pot metal or silver tone pewter. Because the mesh wings were painted over with opaque enamel on the front, manufacturers skipped plating the backs of the wings to save money, leaving the natural matte gray metal exposed. There appears to be missing parts at the end of the silver-tone metal curved stem, but I am not sure if this is due to a missing rhinestone or something else. A lovely, vintage piece in otherwise excellent condition, this brooch is a fantastic addition to