I posted for info on another watch of my great-uncle's I received a few weeks back (https://forums.watchuseek.com/showthread.php?t=163224) - it was marked "Rubis" on the face (with a red star), Swiss-made Avalon Watch Co. That watch is currently in the hands of a reputable watch-maker in Nashville, who expects it to be ready by this weekend. I am very much looking forward to having it in good working order, and I expect to carry it often. I thank one and all for the info on it.
I received this watch from my father tonight - it also belonged to my great-uncle (my father's much older brother-in-law, after whom I was named - he was like a dad to my father, who lost his own dad at an early age). Anyway, this watch is also marked "Rubis" and is also a Swiss 17-jewel movement (by Delemont Watch Co.). It is the same size as the Avalon watch, but the case is marked base metal rather than the 10K of the Avalon. Also, as you can see, the Delemont watch is in MUCH nicer condition inside. It is currently running and keeping time.
Any info on this watch, or Delemont, Avalon or Rubis watches in general, would be greatly appreciated.