The Reason

An unusual system for assembly of the case resulting from the onyx material used in the main body. The system was often executed by Cartier but few others.


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Circular engine turned style dial with black Roman numerals and blued steel hands. The movement is loaded into the watch case from the front of the watch through the gold and enamelled ring which is inturn locked in place with the four screws set into the 4 flower patterns at 12, 3, 6, 9. 

The movement is signed European Watch and Clock Company. In the early 1920s. Cartier formed a joint company with Edward Jaeger (of Jaeger-LeCoultre) to produce movements solely for Cartier. The European Watch and Clock company born, Cartier continued to use movements from other makers including Vacheron ConstantinAudemars PiguetMovado and LeCoultre.

The case is 48mm in diameter and, the movement made in German silver.

All of the rubies in the calibre as with all found in a functional capacity in watch movements are synthetic. These seen here are 'rubbed' in, in a sense riveted in place therefore not allowing for any future adjustment.

All of the rubies in the calibre as with all found in a functional capacity in watch movements are synthetic. These seen here are 'rubbed' in, in a sense riveted in place therefore not allowing for any future adjustment.


To learn more about Cartier click on www.en.cartier.com