These cards use the same image. The image also appears on Britton & Rey 528, Britton & Rey 628, Scheff 123 (b+w, postmarked 10/16/1907), and Selige 3189 (postmarked 6/04/1906).
Charles Weidner and Richard Behrendt must have had a business relationship, as many early Weidner images reappear on Behrendt cards, like this one, Sutro Heights: Parapet, City Hall, and Hotels: Palace Hotel.
Steve's SF postcard pages: