FRODSHAM ART DECO LAPEL WATCH DIAMOND AND WHITE GOLD Frodsham Watch Co., GenËve, Switzerland. Made circa 1910. Very Fine and unusual, 18K white gold and diamond-set, keyless, lapel watch with articulated integral diamond-set brooch. Two-body, solid, polished, hinged case back, entirely pave-set with rows of round, square and baguette diamonds, cabochon sapphire-set winding crown. Matte silver with painted Arabic numerals, outer minute track. Blued steel epee hands. Cal. 5``` tonneau, rhodium-plated, 15 jewels, straight- line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator. Movement signed.