A long chain that was probably a guard chain but has no opening clasp. The chain is likely to be made of Platinon which is an alloy of nickel and was the 'reputable platinum imitation' by John Wall of Birmingham and Hatton Garden. The metal is supposed to mimic platinum by not tarnishing. There are 95 crystals bezel set in an open back setting each approximately 0.4cm.
146cm (57in) long