Nivaflex Mainspring for Elgin grade 700 No 6693 - Alloy

Nivaflex Mainspring for Elgin grade 700 movements (with variants) plus perhaps similar ébauche watches, Factory No. 6693, white alloy, new in envelope. I likely have several of these so the one you get may differ slightly from the images. 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.