just snapped this on the bay. not sure but I think it might be a 1921 Justine, I can't quite make out the movement details as yet but I do think it is all Bulova. Merc found the ad for me me and it certainly looks the part. Once I get my hands on it I will ad further details.
According to the seller its running fine.
I think you will agree those emeralds do look good
I have updated the info and its certainly looks more like a Justine see jewel count and movement