BESTFIT Mainspring WA40 for Bulova 11AAC, Felsa 415, 690 & 410 automatics - Alloy

BESTFIT Mainspring with attached bridle WA40 for Bulova caliber 11AAC, Benrus caliber BT, CD, Felsa caliber 415, 690, 410 automatics plus similar ébauche watches, white alloy. See image for precise mainspring specificaions. I likely have several of these so the one you get may differ slightly from the images. 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 a pretty good job of representing the item.