Sterling Silver Chain Necklace 63.0cm/24.8" Cable Link Vintage c1980.
The silver mark can be found to the link adjacent to the clasp, this is where you see the London assay office mark but there is no date letter. Good secure bolt ring clasp with a good spring.
Length 63.0 cm or 24.8 inches.
Width of chain 0.2 cm or 0.07 inches.
Weight 7.4 grams or 4.8 penny weight.