18k white gold diamond ribbon brooch pin 1960s

A 18k white gold and diamond ribbon brooch - a cluster of 8 claw set brilliant cut diamonds over the knot of a bow; the ribbon and trailing tails bead set with 35 single cut diamonds - marked for 750 and a serial number - total weight of diamonds 8=0.60cts F-G/VS - SI, 35=0.75cts H-I/VS to SI, total weight of brooch 11.5grms - overall dimensions 45mm x 28mm - c.1960 Europe