Shubaj, did you see any ad matches?
I looked for an ad but did not see one. Does not hurt to double check which I will do.
I searched again the database ads and did not see any fits. I will check the web maybe get lucky. I do know the watch was produced 1975-1976.
I didn't see anything either, looks like we'll tag this one
Accutron Calendar in very nice condition.
1975 Accutron Calendar.