Gruen Factory stem for caliber 405 thru 422 OM - new in envelope

GRUEN factory stem for calibers 405 OM thru 411 OM (Old Model), new in open envelope. Stem may not be pristine but is new and unused. 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.