All stainless bezel & back. Lumed hands & hour dot minute markers -still absorbs light & lasts about 5 minutes. Movement and back both stamped M3 (too small on movement to photograph-placement on plate above and near stem. *** Upon further ads research, I have determined this is a Regatta 23... although, NOT a Regatta 23 "A", "C" or "G". ***
Movement Serial No.
Case Serial No.