Black & white ad card with an especially nice view of Central District — and no advertising.  Two unused cards are available (Grades: 1, $2).  One other, mailed in 2014 with four stamps and trilingual blue Air Mail label, and two large philatelic postmarks (Grade: 1, $6).  Finally, one more:  mailed in 2016 with commemorative stamp, airmail label, and philatelic postmark (Grade: 1, $4).