Landeron fly-back lever spring / operating lever spring cal. 149 189 / part 8335 8340 (new)

Landeron 149 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 149 189