Marco Mainspring #3029 for Bulova 6N, 6SN, Sonceboz 246 - Steel

Marco Mainspring No. 3029 for Bulova caliber 6N, 6SN, Sonceboz caliber 246 movements plus perhaps others, steel, 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.