Just picked this one up, and it looks like it never saw any serious wrist time. Stainless case shines like a mirror and it looks like it has never been opened. I will at some point, but not today. At time of posting, it's been in my hand for about 3 hrs, is running and appears to have lost a second over those 3 hrs.
According to 1966 Linebook 162, this is a Date King "AG" when mounted on a stainless steel band, and a Date King "PM" when mounted on leather. Based on that, this is a
Date King "AG".
Band is a nice Kreisler and is a pretty close match to the ad from the previous year. Only difference is the "Waterproof" text on the dial. I am assuming that may be explained by the year difference between the watch and linebook entry. Watch is a match besides that.