Vintage Calla Lily Gold Tone Large Brooch

This vintage brooch features two alternating calla lily blossoms with a supporting leaf. The approximate size of the brooch is almost 4" by 1" and the closure is a safety rollover clasp. My sister-in-law was an avid collector of so many things, jewelry was just one category. She knew everything about each and every one of her pieces but unfortunately she is no longer able to tell us. I'm not an expert - I just offered to help find new homes for her beloved pieces. This is a vintage piece and has evidence of wear that is appropriate for its age. Please examine all photos closely for condition.