An Edwardian diamond and enamel fob watch, early 20th century

An Edwardian diamond and enamel fob watch, early 20th century, the silvered dial with black Arabic numerals, blued steel hands and subsidiary seconds dial at 6 o'clock, the reverse decorated with lavender grey guilloche enamel centred with a diamond-set motif and surrounded by a pierced lacy border millegrain-set with rose-cut diamonds, the watch suspended from two guilloche enamel plaques and a diamond-set brooch of ribbon-tie design, manual winding, numbered 19789, watch width 3.2cm, overall length 6.8cm, case