Vintage Norway OPRO Blue Enamel Sterling Silver Cufflinks

Vintage Norway OPRO Blue Enamel Sterling Silver Cufflinks
Weight: 10.7g
Circa 1980
Measurements: 3/4" x 7/8"
Stone Measurements: 19 x 17.2 mm
Markings: 925 S, OPRO
Blue, Enamel, Gold Toned
Condition: Great, light patina