BESTFIT Mainspring 212C for Bulova 4AK, 5AP, AS 846, Bidlingmaier 50 - Alloy

BESTFIT Mainspring 212C for Bulova 4AK & 5AP, AS 846 and Bidlingmaier 50 caliber movements, plus perhaps similar ébauche watches, white alloy, new in envelope. See images for precise mainspring specifications. 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.