Gold necklace There are markings, but they are unreadable. 60cm Kihei chain The chain was not originally included, so the chain is a bonus. Top: 4 x 4 cm Chain width: 2.5mm This item was found while cleaning out my parents' house, so I don't know when or where it was purchased. The chain was not originally included, so I've added it as a bonus. Gold coin necklace I also have other items for sale, including K18, Pt900, and K10 necklaces, rings, and earrings.