Vintage UNOAERRE 18K Gold Brooch Pin 750 AR BREV Italy 6.27g

The brooch is marked 750 (18K gold fineness), AR (Arezzo, Italy), BREV. (Brevetto/Patented Design), and bears the UNOAERRE maker’s mark. The “7” in the 750 hallmark is faint due to age and wear but remains visible under magnification and certain lighting conditions.