Frederique constant watch art deco this exquisite diamond ladies watch from the frederique constant classics family houses a swiss sourced quartz battery and sits inside an elegantly curvaceous oval diamond decorated bezel the convex sapphire glass front offering a scratch hardness of 400 compared to 50 for window glass exhibits a spectacular set of twelve roman numerals in a crisp black font to provide a dynamic contrast against the silvered dial which has undergone the guilloche effect