Platinum, gold, diamond and enamel pendant-watch, Tiffany & Co., circa 1900

The gold cone-shaped case applied with translucent royal blue enamel over a guilloché ground, enclosed within a platinum net set with small old European-cut and single-cut diamonds, the white circular dial applied with Arabic numerals in blue and red enamel, dial signed Tiffany & Co., made in France, together with a platinum chain, length 27 inches.