TWO JEWELLED AND GUILLOCHÉ ENAMEL GOLD BROOCHES

TWO JEWELLED AND GUILLOCHÉ ENAMEL GOLD BROOCHES
BOTH BY FABERGÉ, WITH THE WORKMASTER'S MARK OF AUGUST HOLLMING, ST PETERSBURG, 1899-1904
One, rectangular with cut corners, enamelled in royal blue over a sunburst guilloché ground, centring a rose-cut diamond within a seed-pearl border, marked on pin and loop; the other, oval, enamelled in oyster white over a sunburst guilloché ground, within a rose-cut diamond-set border, marked on pin
1 ½ in. (3.9 cm.) wide and smaller