This is a 9ct Yellow Gold Hollow Domed Curb Chain.
New.
Hallmarked.
 
Chain Width: 6mm
Chain Depth: 2.4mm
 
Available in Lengths:
18 Inch - approx 16g.
20 Inch - approx 17.5g.
22 Inch - approx 19.5g.
24 Inch - approx 21.5g.
28 Inch - approx 25g.