Well, this is interesting. Year difference in linebook and ad with different model numbers. Different bands would suggest a different model #, but maybe not. I just ran across a similar same time period band discrepancy on another watch being Citizen "C" . 1971 linebook shows it on an expansion band and a single 1972 ad depicts it on Corfam strap.
There is also the US/Canada different name possibility, but that is questionable. Nov. 1972 (ad dated Dec) was a Presidential election year with Nixon winning by the largest popular vote margin to that point.
There is also the possibility the single ad is incorrect?
Unfortunately we have no 1972 linebook to reference. If a second ad surfaces calling it President in 1972, I'm in. Coin flip for me as well, but I lean towards the linebook for now noting the single Canadian ad.