Try looking here.
In reply to Try looking by bobbee
In reply to Vlad What's the metal by William Smith
I asked in Bulova service on any information to this watch and this is theirs answer:
They did not always have these models as part of a collection or group
name. the information you provided detailed the year the M9 is for 1969
the G 832428 is only a serial number not the case reference which is found
on the inside of the back image which is what the 2661 number is.
1970 Accutron Calender for now,
The response you recieved from Bulova Customer service is normal...most of the rep's answering your inquiry were not even born when this watch was made, and from dealing with them, they really don't give a rats rear about old watches...they direct you here for the ID.