Elgin Factory stem / winding arbor for 4/0s Grade 790

One Elgin factory stem for 4/0s Grade 790 movements, new in packaging. These are PUW 570 based 17-jewel, sweep second automatic movements so this will fit watches other than just the specified Elgin. In the Elgin factory vernacular these are called winding arbors, but everyone else just calls them stems. These are long-hub ones in contrast to the male/female ones used in waterproof watches. See images for further details. 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 an American watch I likely have it. Images do a barely adequate job of representing the item.