HR Mainspring No. 584 for Bulova 17TR, Lemaina 19N20 & Venus 121-122 - Steel

HR steel Mainspring No. 584  for Bulova caliber 17TR, Lemania caliber 19N20, 19N20RS, 19N20R10 & Venus caliber 121 & 122 and perhaps others, new in dirty envelope. See images for precise mainspring specifications. 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.