Samson Mainspring No. 3595 for Universal 12L Chronographs cal 281 & 283 - Steel

Samson No. 3595 steel mainspring for Universal 12 ligne Chronograph calibers 281 & 283 and perhaps others, new in envelope. See images for precise mainspring specifications. 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.