BELLE EPOQUE PLATINUM BROOCH WITH PEARL AND DIAMONDS

Description:

ROBERT KOCH ATTRIBUTTED AROUND 1915-20
Ø 2,8 cm
Platinum (tested) with a yellow gold substructure. One pearl (Ø 8.5 mm) and 40 brilliant-cut diamonds, as well as 30 early octagonal-cut diamonds totalling approx. 2.80 ct G-H/VS-P. Weight 8.9 g.
Private collection Rhineland, purchased from Koch in Frankfurt and has been in the family for several generations.