No Image Lot 93 A Norwegian 930 silver cobalt blue guilloche enamel brooch, marked for Marius Hammer. Approximate 93A Norwegian 930 silver cobalt blue guilloche enamel brooch, marked for Marius Hammer. Approximate Hansons Auctioneers and Valuers A Norwegian 930 silver cobalt blue guilloche enamel brooch, marked for Marius Hammer. Approximate length 9cm. Gross weight approximately 8.89 gram... Add to watchlist Live