JAEGER Le COULTRE 478/C-721, Balance, complete

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JAEGER LE COULTRE original Balance complete, sourced from an untouched, factory-original movement. Verified by a WOSTEP-Certified watchmaker.

Balance staff total height: 3.30 mm, meticulously measured and verified.
Pivot diameter on both sides: 0.075 mm.

Micro-Tested Geometry: Both upper and lower pivots have been physically measured using a high-precision ICA Feintaster (microcator). The pivots show absolute cencentricity and zero wear, registered at precisely 0.075 mm on both ends. This ultra thin low-friction specification is identical to the observatory-grade standards required for the JLC Geophysics and Vacheron Constantin Cronometre Royal (Cal: 1008).

Fits JLC cal: 478, 478/C with Parechock (Geophysics variants).
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.