Newall Unbreakable Mainspring 1605N for Font 120, 123, 212, Bulova 6AM, 6AH, 6AZ - Alloy

Newall N-Dur-All Mainspring 1605N for Font 120, 123, 212, Bulova 6AM, 6AH, 6AZ, Benrua AB caliber movements plus perhaps other similar ébauche movements as well, alloy, 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.