Made popular by Cartier and described by the firm as a Guillotine, these pocket watches featuring a cover to protect the dial and the hands are extremely rare. In fact we have only ever sold one other example made by Cartier in platinum, this example is triple signed by the famed NY based retailer Black Starr and Frost, that was known as one of the most prestigious store selling high end items such as jewellery, watches, pocket watches and clocks.