A MEDIEVAL 15TH CENTURY FRENCH GILT COPPER AND SILVER RELIQUARY CASKET (CHASSE)of sarcophagus form surmounted by a crucifix, the corners with protruding Gothic style architectural pillars, the casket mounted with silver repousse panels decorated with scrolling acanthus leaves, the front of the lid with a repousse relief of Christ in blessing, with a pair of silver relief figures of the Madonna and Child and St. Nicholas holding three balls, the hinged lid opening to reveal the void interior with later gilt embossed paper lining, with original pierced key,28cm high x 24.5cm wide