3 Antique vintage guilloche engine turned enamel sterling 925 butterfly brooches

X3 antique vintage guilloche English turned enameled 925 Sterling silver brooches. -Yellow green c clasp marked sterling oxo 925s made by H.C. Ostrem Norway, has a hairline crack in one of the wings maybe bent but no enamel loss - white guilloche enamel is by David Anderson Norway sterling 925 -smallest blue guilloche engine turned enamel is Norway Sterling 925 Hroar Prydz Sold as is see all pictures