Hi guys, new member here! Been watching Mark's videos and they have been super helpful. I consider myself a sport watch collector and would like to start a project watch myself to learn and work on. Always loved the Omega Speedmaster. If I search for a case, is there a replacement Mechanical or Automatic Valjoux or something else that will work with the case? I'd like to find a vintage Omega dial and hands while I learn to clean and do minor repairs to it. Eventually I'd like to purchase a genuine cal. 861 movement for an authentic parts watch. Something to build and enjoy myself, wouldn't flip it. Thanks everyone!