Lecoultre master mariner automatic

35mm x 35mm

13.25mm depth

40mm lug to lug

 

The watch dates to the early 1950s.

 

The Calibre 476 was the first automatic movement from Jaeger-LeCoultre.

Introduced in 1946, the Calibre 476 came 20 years after John Harwood and Blancpain presented the first automatic wristwatch and 15 years after the Rolex "Perpetual" went into production. It was a bumper movement, not a 360º rotor as in today's watches, but it boasted a respectable 40 hour power reserve and was accurate enough to be certified a