RN Mainspring No. 329 for Bulova 8AH, Benrus AX, ETA 1000 - steel

RN mainspring No. 329 for Bulova 8AH, Benrus AX and ETA 1000, 1001SS caliber movements, steel, new in envelope. See images for 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.