HR Quick Fit Mainspring K723 for Langendorf 1901 - Alloy

HR Quick Fit Mainspring K723 for Langendorf caliber 1901, white alloy, new in envelope. See image for precise characteristics and further helpful information. 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.