BESTFIT Mainspring 414H for Font 59, 59N and perhaps others - Alloy

BESTFIT Mainspring 414H for Font 59, 59N plus perhaps similar ébauche watches, white alloy, new in envelope. See image for precise characteristics. I likely have several of these and the envelopes look slightly different but they are all the same mainspring. I specialize is 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.