Platinum & diamond Watch no. ???

Case: Dial: Dial signed B.C. Co. with areas of oxidation, detached from movement Movement: 18 jewels, 8 adj Provenance: 19?? - Niton, Geneve 2010 - Skinner Auction 16 March 2010 Est $1,500-2,500 sold $1,896 "Art Deco Platinum and Diamond Wristwatch, the silver-tone dial with Arabic numeral indicators, case and bracelet bezel- and bead-set with full, baguette, and marquise-cut diamond melee, approx. total wt. 3.78 cts., lg. 6 7/8 in., together with a Tiffany box. Deco Wristwatch very nicely made case and bracelet one hand is missing, movement with rust and green oxidation around pinstem dial signd B.C. Co. with areas of oxidation, detached from movement pinstem missing and part would need to be made to replace it 18 jewel 8 adjustement "Niton" movement Niton made some movements for JE Caldwell"