This is a Accutron bowtie case, with a 218D movement. From ads found on this site I believe it's a model 218, however I haven't found any model 218 adds with a date and black dial. The photos make its condition look a lot worse than it does with the naked wye. Is this a real 218 or a 218 case with different movement/dial. It does keep excellent time.
Thank you for posting your watch. This one is one of my favorites and I just picked up a silver dial version of this which also has a date. The dial and movement most likely are correct for the watch.
1965 Bulova Accutron
1965 Bulova Accutron Calendar "BF"

A beautiful watch and Good ad match, Stephen.
1965 Bulova Accutron Calendar "BF"
works for me.
Thank you for the watch identification. I should have posted here a long time ago. Apparently this was an expensive watch in 1965. I wear this and an Accutron CK regularly.
Nice ad find.
1965 Bulova Accutron Calendar "BF"
Sweet watch - 1965 Bulova Accutron Calendar BF