A Cartier 'Roulette' pocket or fob watch

A Cartier 'Roulette' pocket or fob watch, in the form of a casino roulette wheel, the silvered dial signed 'Cartier', with Arabic numerals, outer rotating bezel with black and red coloured numbers 1-9 and on the reverse a full set of numbers from 1-33, engraved inscription to rim 'Molly 31 Jan 38', 4cm wide