it is an automatic movement, Chinese. I would also like to practice removing the jewels on automatic movements and replacing them with new. i have an eta 2824, 2892 and 7750.I'm just curious, something i want to learn. I don't really come across pocket watches, just the modern automatics (if that makes a difference?). Any advice appreciated.
Don't know about the origins, but that's old school stuff there (at least whoever was using it was old school). Those arbors would hold the drill, the pointy side would fit in a divot on the side of a bench vice, and the plate or whatever held against the drill while the arbor was driven by a bow. Lot of crazy work was done with that crazy setup.