Rezista Mainspring for Bulova 10BL, 10ZL, Felsa 335, 336, Fleurier 170 - Steel

Rezista steel mainspring for Bulova 10BL, 10ZL, Felsa 335, 336, Fleurier 170 caliber movements plus perhaps other similar ébauche wrist watches, new in envelope. See images for precise mainspring specifications. I specialize is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.