PM Mainspring for Bulova caliber 9AT & 6R - ONYX Steel

PM Mainspring No. 35 for Bulova caliber 9AT & 6R plus perhaps several other similar Bulova movements, ONYX steel, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one 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 an adequate job of representing the item.