Jaeger-Lecoultre 450/4C mainplate with incabloc 100

Jaeger-LeCoultre

Founded in 1833 by Antoine LeCoultre, Jaeger-LeCoultre is a revered Swiss haute horlogerie manufacture, often called the Grand Maison" of the Vallée de Joux. The brand holds over 1,200 calibres and hundreds of patents, known for its exceptional technical prowess and artistic finishing. Famous models include the Reverso, with its iconic reversible case, the Master Ultra Thin, and the Polaris. Jaeger-LeCoultre is a true manufacture, developing all its movements in-house, such as the Calibre 899 and the complex Calibre 101, the world's smallest mechanical movement. It embodies the pinnacle of Swiss watchmaking artistry and innovation."

Plate

A plate is one of the main structural foundations of a watch movement, holding bridges, wheels, jewels, levers, and other components in precise alignment. Plates are essential for the stability and layout of the movement. They may be replaced when damaged by corrosion, impact, stripped screw holes, worn jewel settings, or previous incorrect repair work.