Landeron 48 51 Chronograph ... spring for sliding gear # 8325... x1

Landeron 51 ... spring for fly back lever #8340 ... x1

LANDERON 48, 51 and 148 Replacement parts.

Landeron No. 430 click spring for chronograph calibers 48 51 148 248

Landeron No. 440 yoke set spring for chronograph calibers 48 51 148 248

Landeron watch caliber 48 51 ... spring for coupling clutch #8320 ... x1

Landeron 48 51 ... 148 ... setting lever or detent #443 ... x1

Landeron 48 Swiss Original Watch Parts Chronograph