EDWARDIAN PLATINUM, DIAMOND, AND EMERALD ARTICULATED BOWKNOT DESIGN PIN CONVERTIBLE TO PENDANT. Two emerald-cut emeralds together weighing app. 1.50 ct., in pierced setting with 68 old mine-cut/ old European-cut round diamonds together weighing app. 3.00 ct., with five emerald accents. With separate platinum clip designed to convert pin to clip. Accompanied by gold-tooled red leather box stamped Pierre L. Ruedin Jewels/485 Madison Ave./New York, and stamped with initials "S.D.R.", for Sara Delano Redmond, cousin of Franklin Delano Roosevelt. - L: 1 1/2 in. Estimate $5,000-8,000