Visual Description
The Ref. 1440 is the 27 mm Diabolo: Monaco Legend, Eppli and Amsterdam Watch Company give 27 mm, and Aguttes and Antiquorum 27.5 mm, with Antiquorum giving 9 mm thick. The round case is 18k yellow gold. Dials are white or cream with Roman numerals, or guilloché silver with painted radial Roman numerals on the anniversary example Antiquorum sold. Most examples are on a leather strap with a signed 18k gold Cartier buckle or folding clasp; Eppli sold one on an 18k yellow gold Cartier bracelet.
Reference Significance
The 1440 is the smaller of the plain yellow gold quartz Diabolos; the Ref. 1420 is 32 mm, with a date. Monaco Legend and Eppli catalog the movement as the Cal. 157.06. Monaco Legend writes the number as 1440-0 and Amsterdam Watch Company as 14400.
In 1997 Cartier issued the 1440 as a special series for its 150th anniversary. Aguttes sold one titled Diabolo 1847 Louis Cartier, with a warranty certificate dated 4 September 1997, and Antiquorum describes a limited edition of 150 pieces.
Historical Context
Amsterdam Watch Company dates one example to about 1994, the anniversary series dates from 1997, and Monaco Legend dates another to the 2000s. Monaco Legend gives 1991 for the launch of the Diabolo model. No source gives an end date.
What to Look For
Case: The case and lugs should be crisp rather than rounded by polishing.
Papers: The anniversary example Aguttes sold came with its case and a 1997 warranty certificate stamped for the 150 years sale.
Movement: The quartz should run and keep time after a new battery.
Buckle or clasp: Check whether it is gold and signed Cartier.
