Vintage Portuguese .800 Fine Yellow Gold 2.1mm Cable Chain Necklace

Vintage Portuguese .800 fine yellow gold 2.1mm cable chain necklace with a 18k yellow gold clasp.  ID#: NEC751 Metal: .800 fine yellow gold and 18k yellow gold clasp  Length: 24 3/4"  Chain Width: 2.1mm  Weight: 11.29g  Markings: '800' Portuguese gold stamp, '750' (on clasp)