Elgin Factory MALE #3 crown post / winding arbor for 6/0s grade 760, 761, 762

One Elgin factory MALE #3 crown post for 6/0s grade 760, 761, 762 and perhaps others as well, for movements in waterproof cases, 711-3-A, new in packaging.  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. Images do a pretty good job of representing the item.