Marco Marshalloy Mainspring #470 for Hamilton 14/0s No. 717440 - Alloy

Marco Marshalloy Mainspring #470 for Hamilton 14/0s Movements No. 717440, alloy, new in envelope.  C & E Marshall repackaging of what is most certainly an original factory 717440, fitting the grade 980 (and others). I likely have several of these so the one you get may differ slightly from the images. I specialize is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.