Landeron fly-back lever spring / operating lever spring cal. 148 149 154 185 186 189 349 / part 8335 8340 (new)

Landeron 148 fly-back lever spring / operating lever spring / part 8335 / 8340

Ressort de bascule de remise à zéro / ressort de commande

New old stock never used / Neuf de stock

Same part for Landeron 148 149 154 185 186 189 349