BESTFIT stem for Excelsior Park caliber 3364 Timer

One BESTFIT stem for Excelsior Park caliber 3364 Timer and possible variants, new in open envelope. This is Position Number 311 from the Bestfit #200 Stem System. Yes, the package says 1/4 doz but there is only one in the 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.