NuTemper Mainspring #604 Waltham 2251 for Model 678 - Steel

NuTemper Mainspring #604 for Waltham Model 678, Factory No. 2251, steel, new in envelope. See image for precise characteristics. 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.