Here is my first Hamilton/Ball I have ever owned. It is 999B. 21 jewel 16 size, 6.pos s.n. on the movement is #1B20519 and the case s.n. is #8681015

And here is photo of the fine R.R. grade movement...

Another photo of this fine timepiece...

Very Nice, Robert! SLOGAN: "Carry a Ball and Time them all!" (Meaning that Ball Watches were accepted for use on all Railroads) If you weren't before, you're Hooked now!