Crown Factory 12s Model 1512 Winding & Setting Arbor / Stem

ONE Crown 12s Model 1512 Factory winding & setting arbor / stem for detent set (also called positive setting) movements, Factory No. 1337, new. This is from an original Keystone Crown factory parts system and is virtually pristine. It is not used and not an aftermarket stem, but a true original factory part. I specialize in hard to find watch parts so I usually have whatever you might need and inquiries are always welcome. Images do a pretty good job of representing the item.