BESTFIT Mainspring 565X for Excelsior Park 3364R Timer - Alloy

BESTFIT Mainspring 565X for Excelsior Park 3364R Timer, white alloy. Not sure whether this also fits the 3364 timer, but I would presume not. See images for precise characteristics and further helpful information. 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.