A most unusual early 19th century gold and hair watch chain

A most unusual early 19th century gold and hair watch chain, the cylindrical links are formed with sections of hair and bound with gold lattice cylinders, the gold t-bar with scroll engraved spherical terminals, suspending a conforming hair and gold lattice-form pendant with glazed compartment to one side, the other with a flip open locket compartment containing a photograph of a young lady, the chain 31cm, the locket 2.5cm high and with French control marks