Because of the topic and focus of the museum, we choose to list this series of black-and-white cards under “Yugoslavia” instead of “Serbia,” though the cards date from 2019.  So don’t let the old appearance fool you.  Photo was taken on 25th May 1969, International Youth Day.  Unused card that’s flexible and — yes — magnetic.  We would not put this on our refrigerator, but you could.  Grade: 1