Wittnauer Factory stem for caliber 11K - new in envelope

ONE Wittnauer factory stem for caliber 11K and perhaps other as well, new in sealed envelope. Because the envelope is sealed the stem may need some cleanup before use. 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 and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a pretty good job of representing the item.