PM Mainspring No. 92 for Bulova caliber 8AL & FF caliber 60 - ONYX Steel

PM No. 92 ONYX steel mainspring for Bulova caliber 8AL plus FF caliber 60 and quite likely others, new in envelope. See images for precise mainspring specifications. 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.