Wittnauer Factory Mainspring for caliber 5JH - Steel

Wittnauer Factory Mainspring caliber 5JH plus perhaps similar ébauche watches, TONGUE END, steel, new in sealed envelope. The wonderful thing about factory mainsprings is they always fit! Oh, and make sure you need a Tongue end as these were also available as a T-Brace. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.