Case is 14K white gold-filled. Back of case includes patent date (Pat. June 10, 1924). Radium dial. Cathedral hands. Band is a Sturdy-brand open link design with folding ratchet buckle.
As movement and case are only 1 year apart, I suspect that it's a 1930 model using an older case, and not a 1929 model with a replaced movement. 5th digit of case serial is incompletely stamped and could be 3, 8, or 0, but is likely 0, based on hand-scratched numerals on the inside of the case that match the last 3 of the case serial (X V VIII).