Move the slider to compare photographs. View larger here. Look at other comparison photographs here. This photo was initially dated 1973, but Tony wrote me to point out that Embarcadero 2 is visible, pushing the date to 1974.
View from Mount Davidson: 1974 and Today
I believe that the photo dated as 1973 is of the following year, 1974. Embarcadero Center #2 is shown completed, which occured in the latter year.