Stem for Omega caliber 220, 230, 231 movements

ONE Stem for Omega 10½ ligne caliber 23.4, 220, 230, 231 Movements, Swartchild Series 1870, Bestfit No. 679F, new in envelope. I specialize is hard to find watch parts so I usually have whatever you might need, all watch parts are unconditionally guaranteed and offers are welcome. Images do an adequate job of representing the item.