32mm case diameter. *For database reference only.
Stephen,
I agree. It would also be nice to know the Year of the model name change.
May also add that in 1956 the self winders of this design were known as Clippers, in the 60's (?) it appears the auto's became Presidents, with a dial and movement upgrade to 23J and again before 1964 to a 30J whereas prior these models were Bulova 23's and Commanders respectively.
I believe this named Squadron is a manual winding watch, interesting stuff.
2nd visual evidence of the 17J Circular manual winding with sub seconds (former 'PRESIDENT') being Named 'SQUADRON' this one dated M0 - 1960 which would coincide with the ads Stephen shows above.
Bought new by the current owner in 1961 - 'SQUADRON D' 17J manual winding.
To me it seems Bulova add military names when there is a war going etc. the original Squadron for example was during WWII. Could this change from President to Squadron be anything to do with Vietnam or another similar conflict? You Americans probably know a little more about rthat dates than me though....just a thought
Squadron always was GJ, I have a 1956 or '58 (?) in the database with the familiar hooded lug design. The switcheroo would have occured to upgrade the President movement and phase out / replace the old Squadron Case design with the popular at the time Circular with sub seconds Dial, (ex) President style, again a guess, but a logical one. (?)