HR Mainspring SA425 for 12s Illinois Factory No. 47344 - Alloy

HR Mainspring SA425 for 12s Illinois, Factory number 47344, T-brace, alloy, new in envelope. See image for precise mainspring specifications. I likely have several of these so the one you get may differ slight 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.