Silver-gilt necklace decorated with Bressan enamels, Bourg-en-Bresse (France), 19th century. Silver-gilt necklace, consisting of 20 circular enamel medallions, alternating between small ones, and others increasing in size towards the centre, with a central motif of square and circular medallions. Pear-shaped enamel drops hang from the lower edges, and there is a matching circular snap clasp. All t…