KUIBIS, violet rubber handstamp with travelling postmark I of 13.8.07 (year inverted), full strike on attractive small commercial cover with 10 Pfennig franking (stamp with pre-existing vertical crease trace, envelope roughly opened on reverse), to Lines-of-Communication Command at Keetmanshoop, arrival 16.8.07, signed Grobe and others, photo certificate Dr. Friedrich Steuer VÖB "The travelling postmark with Kuibis in violet is rare".