Elgin Factory Mainspring for 0s & 3/0s No. 2097 - Steel

Elgin Factory Mainspring No. 2097 for 0s & 3/0s movements, steel, new in likely quite frail envelope. Has the typical Elgin DB&H end, See images for further information. I likely have several of these so the one you get may have a slightly different envelope. Elgin mainsprings are typically coated in very old grease and must be cleaned before use. 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.