750, 585, and 417 Gold Markings on Jewelry and What They Mean - Bellatory
Found this ring today by a river. Hallmarked 18K 750 but was tarnished like brass til I polished it up a tad. An old fake perhaps, or can 18K come out of
Yellow gold 18k 750/1000 shield man ring with sided decorations
Ladies Genuine Tiffany & Co. 18K 750 Yellow Gold 5mm Wedding Band Ring