Elgin Factory stem / winding arbor for 15/0s grade 557 thru 626 movements

One Elgin factory stem for 15/0s grades 557 thru 626, new in packaging. See images for further details.  In the Elgin factory vernacular these are called winding arbors, but everyone else just calls them stems. I'll also point out that this is a long version of the 557 stem which is far less common than the short one (which I also do carry)  I likely have several if 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 an American watch I likely have it. Images do a pretty good job of representing the item.