Cool 2 tone hinged case with pattern match period band installed by me. S/N on case and movement date code both 1933. This appears to me to be a pretty scarce model. Best possible matches are Alexander and Princeton (neither with 2-tone ad confirmation). Alexanders in the Db are all 7 or 15 jewels, and period ad price points reflect this ($24.75 & $29.75). The Princeton ads state 15 jewel, however price ($37.50) would seem to indicate 17 jewels.
Keeps perfect time as received.
Ad referenced dated 1933.