Quick Fit Balance Staff for Bettlach (EB) Caliber 1197 movements - new

Quick Fit Balance Staff No. 17610½ (357-1) for 10½ ligne Bettlach (EB) caliber 1197 movements, new in open envelope. See images for further details. Envelope may or may not have once had 1/4 Doz but only 1 is present now. I specialize in hard to find watch parts so I'll usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a reasonably good job of representing the item.