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Jaeger-LeCoultre

Some further info...

 

Overview of Futurematic calibers:

497

497/1

827 - all above are hand-style powerreserve.

817

817/1

837 - all above are "port hole"

Somewhere on this forum are production figures posted...

From my memory the cal. 837 has a run of 500 pieces.

The references E 501 and E 502 are screw caseback and therefor "E"tanche.

Shown steel "port hole" watches are Clavi's (brown strap) the one with pink gold indexes is mine.

Cheers - Ilja

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