HR Quick Fit Mainspring No. K420 for Font caliber 59 - Alloy

HR Quick Fit No. K420 white alloy mainspring for Font 59 movements and likely several others, new in envelope. See images for precise mainspring specifications. 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.