Art Deco Waltham Ladies Platinum Fob Watch

An Art Deco ladies' fob watch by Waltham. Circular dial with Arabic numerals, blue steel hands, dial signed Waltham, in a platinum case decorated with engine turned engraving, which radiates from the centre back, and is embellished with an applied, millegrained, pierced, quatrefoil motif, set with a central round old-cut diamond, with scroll engraving around the sides on a detachable platinum chain, of fetter and single trace links, with colourless, guilloche enamelled tapered bars. Circa 1930's