The dial is very similar to the one used in the 'G' variant. However, I do not find a variant for this case style. I find it unusual to see this gold dial in a stainless case, so I suspect a marriage of components.
Wow, nice looking watch, very clean. I like this case style, I'm not finding an advert match either
1973 Bulova Accutron Date & Day
1973 Bulova Accutron Day & Date