Hello Si
Yours ? Nice.
It's not a pocket watch. however. It's an aviators watch - fits in to the cockpit panel of an aircraft. Circa 1916 or so. Hence no bow, although most seen have the stemlater drilled and a bow fitted. Nice to see one that this hasn't been done to.
Obviusly the lume has been added later - it should of course be non-luminous as per the dial. I'd get that removed if I were you as part of having it fixed up. It's certainly worth fixing. Is the dial in good nick ?
Can't help on the BB, sorry.
Cheers
Foggy