JAEGER Le COULTRE 478/V&C 454, Balance Staff No 723 - H: 3.31 (Ronda 3092 High-Spec)

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JAEGER Le COULTRE Balance Staff by Ronda (3092). Verified by a WOSTEP-Certified watchmaker.

Balance staff total height: 3.13 mm, meticulously measured and verified.
Pivot diameter: 0.075 mm.

Micro-Tested Geometry: Both upper and lower pivots have been physically measured using a high-precision ICA Feintaster (microcator). Registered at precisely 0.075 mm on both ends. This specification is identical and fits VACERON CONSTANTIN 454, 1008 and JLC 478, 478/C (12.5''' sweep-seconds with Pare-chock shock-protection.

Fits JLC cal: 478, 478/C
Fits V&C cal: 454, 1008

The JLC 449 Family:

449: 12,5''' sub second.
450: 12,5''' center second.
452: 12,5''' sub second.
463: 12,5''' sub second, same as 449.
464: 12,5''' sub second, calendar: day, date, month.
468: 12,5''' center second, same as 450.
469: 12,5''' sub second, same as 449.
478: 12,5''' center second, same as 450 and 468.
479: 12,5''' sub second, same as 449, 452, 463, 469.
484: 12,5''' sub second, calendar: day, date, month, same as 464.
494: 12,5''' sub second, calendar: day, date, month, moon phase.