Marco Mainspring #351 for 6s Hampden 7j to 15j Model Pocket Watch #8696 - Steel

Marco Mainspring No.351 for 6s Hampden 7 to 15 jewel model watches, factory number 8696, steel. Could also very well fit in other watches as well, see images for further details. 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 and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.