My dad had one very much like this but no day, only date. Circa 1969. His first Accutron. Man, he loved that watch.
I really like the Accutron I did not much about them until a forum member here kindly passed on his knowledge to me about these watches and that's the great thing about this place great watches very cool people only had one at the time now have six.....馃憤
Had debated selling this guy, but just couldn't bring myself to do it. The dial, with the sunburst at 3, just does it for me. Even if it is a US case and doesn't have one of those awesome case backs Longines is known for.