Vintage 9k 9ct Gold Chain Necklace Yellow Rope Link 41cm 16.1" 3.83g Twisting Helix Twist Solid 9kt 375 9 Carat Retro Womens Jewelry murano It isn't stamped/hallmarked which isn't

It isn't stamped/hallmarked which isn't uncommon for an item of its age and type

The item isn't stamped/hallmarked but tests as above

This brooch would of originally had a gold plate finish

The item is stamped with an old patent marks and tests for high grade silver (800+)

Vintage 9k 9ct Gold Chain Necklace Yellow Rope Link 41cm 16.1" 3.83g Twisting Helix Twist Solid 9kt 375 9 Carat Retro Womens Jewelry murano It isn't stamped/hallmarked which isn'tDESCRIPTION: A vintage solid 9ct 375 yellow gold chain necklace, with twisting rope links. The chain is hallmarked for 9ct gold, dating to 1987. It measures approx. 41cm or 16. 1" in unfastened length, is approx. 2. 1mm thick and weighs approx. 3. 83g.