JLC 460
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Calibre 460 (and similar 490 and 491) are manual winding movements from Jaeger-LeCoultre.
Designed for the iconic Reverso, the Calibre 460 family is a compact oval movement measuring 3.5 mm thick, 15.2 mm long, and 13 mm wide. It beats at 18,000 A/h and is hand-wound.
The three calibres are closely related:
- Cal. 460 is the basic model
- Cal. 490 adds a special pallet cock and regulator
- Cal. 491 adds to cal. 490 a different lower cap jewel with end piece for the balance assortment as well as a different setting lever.
Apart from this, the three movements are mostly identical, with interchangeable parts.