The front has a completely clear view of this unusual city. The back makes it more special: mailed from Pyongyang in 1991, with four very large stamps that fill three-quarters of the card, two full postmarks, and blue official airmail stamp. Where contemporary North Korea is concerned, you could hardly do better (Grade: 1, $55).  And, there’s one more of these, also mailed, two identical stamps, no airmail sticker, very mild creasing (Grade: 1, $39).