BESTFIT Mainspring 113Z for Moeris 19 ligne Pocket Watches- Alloy

BESTFIT Mainspring 113Z for Moeris 19L Pocket Watches calibers F19A, 19B, 19C, 19F, 19G, 19J plus perhaps similar ébauche watches, white alloy. See images for precise mainspring specifications but please note that some envelopes have the Dennison strength mismarked as 13 when it is really 3. 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.