A gold and enamel crucifix pendant, mid 18th Century,

A gold and enamel crucifix pendant, mid 18th Century, depicting Christ on the cross, a banner reading 'INRI' ('Iesus Nazarenum, Rex Iudaeorum', 'Jesus of Nazareth, King of the Jews') above him, the skull symbolising Golgotha at his feet, applied with white enamel en ronde bosse and green basse taille enamel, the reverse with a foliate design in green enamel, length 4.8cm, indistinct assay marks