Antique Fine Detail Metal Bow Broach

Came from an estate of the 1940's - 1950's. There may some darkening of the metal in small spots. Unsure if there is plating but there is fine detail in the piece. About 2" wide. My ignorance may be your gain. I have no clue as to value, it has always been a beautiful piece to me. Regrets for not having more detail. A unique and possible rare piece merely due to the time frame of its origin.