




Starting my second service...
Absolute beginner... Just finished a beautiful 1913 Elgin pocketwatch that still needs some regulation adjustment. Now I'm a third of the size in a Waltham late 60s, supposedly seiko made s-33/UT-33 automatic movement. The watch runs sometimes, and kept good time for hours in the heat outside 90f+ but stops running inside where it's 70F. I assume it just needs cleaned and new oil. Does anyone have any advice before I dig in further?