An 18ct. gold 'Tank Francaise' chronograph wristwatch with date, by Cartier

An 18ct. gold 'Tank Francaise' chronograph wristwatch with date, by Cartier<BR> The rectangular cream dial with Roman numerals, secret Cartier signature at 10 o'clock, three subsidiary dials indicating date, 30 minute and 12 hour registers, the case back secured be four screws, twin push buttons in the band and cabochon sapphire crown, <I>convention hallmarks, case dimensions 35mm x 23mm, with box and documentation</I> <BR> <I>Please note that as the strap for the above watch may be made of endangered or protected animal materials, such as crocodile, it is not sold with the watch but is for display purposes only. Christie's will need to remove and retain the straps before collection by the purchaser<BR> The dial and case signed Cartier, case No. MG246367, Ref. 1830 <BR>