Lange L903

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Lange L903.0
© Lange

The L903.0 is a calibre by A. Lange & Söhne.

Manual winding manufacture movement with minute tourbillon (with fusée-and-chain transmission), chronograph with rattrapante function.

Used in the model A. Lange & Söhne Tourbograph "Pour le Mérite".

Description:

Manual winding movement
Chronograph bridge engraved by hand
Shock-resistant Glucydur screw balance
Plate and bridges from natural nickel silver

Functions:

Hours, minutes
Power reserve indicator
Minute tourbillon with fusée-and-chain transmission
Chronograph with rattrapante function

Data:

Ø 30.0 mm, height: 8.9 mm
43 jewels, including 2 diamond capstones
21,600 A/h
Number of components: 465 (without chain), including bogie: 84
Power reserve 36 h

Production period:

From 2005