Beautiful quality heavy vintage D. Shackman and Sons solid sterling silver collar style necklace. It comprises bands of slim sterling silver links with alternate smooth and textured finishes. It has a box clasp closure.  Weight is 80 grams. It measures approximately 17 inches (32 cm) long. It has makers marks "D.S&A" and has silver hallmarks for London 1973. It is in very good condition. 

Condition: Very Good
Colour/Gemstone : Silver
Metal: Sterling silver
Size: Approximately 17 inches (43 cm)
Era:  1973