HR Quick Fit Mainspring K584 for Bulova caliber 17TR Pocket Watch - Alloy

HR Quick Fit Mainspring K584 for Bulova caliber 17TR movements, plus perhaps similar ébauche watches, white alloy, new in envelope. The caliber 17TR is a 17 ligne pocket watch. See images for precise mainspring specifications but ignore the Montilier reference as I believe it is incorrect. 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.