pborder Can you provide any other photos of the watch? It's difficult to help with model ID'ing based on your photo and text.
While we have a generic model class name for Accutron 218, we don't have a 218D yet- although one could possibly be created if it better describes this model and similar models. And there exists the chance that the movement could be the 218D w/ the calendar wheel, a 2181 w/ calendar, or another 218 sub caliber w/ this date function (based on oliverb's comments).
You can see the possible confusion. We do have a similar looking Accutron entered here:http://www.mybulova.com/watches/1967-accutron-218-1098 however this record also doesn't have enough detail to be ID'ed as anything but the generic 1967 218. Even if we class your watch as a "generic" 1974 218, it would be nice to have the actual movement caliber entered in the record in the "Movement Model" box.
Dr Ranfft lists over 18 different 218 calibers (or sub calibers) including the 218D, however he brackets production dates for the 218D between 1965 throught 1968 only. He lists a 2181 w/ a date function beginning in 1967, but doesn't specify and end date. The 2181G & 2181F both have a date function, and their production dates spans the time of your watch (beginning in 1973).
You can see how it gets confusing....