Gruen Factory Balance Staff for caliber 210 - New

Gruen Factory Balance Staff for caliber 210 movements and variants, new in sealed envelope. See images for further details. 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 so I'll usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.