Norwegian guilloche enamel sterling silver brooch pin vintage Art Deco c1930.
The sterling silver mark can be found to the rear, there is also a makers mark 'NE' in an upside down horseshoe. Good clasp & pin. There is a small chip to the enamel on the mountain side see pictures.
Size 2.3 x 1.2 cm or 0.9 x 0.5 inches.
Weight 2.2 grams or 1.375 penny weight.