Denmark, 1905, 3öre gray, horizontal strip of four. Tied by "Kobenhavn, 13.9.12" cds's on locally addressed commercial corner card cover put aboard the 1912 Copenhagen flight of the Zeppelin Hansa, two strikes of purple "Hansa 19.Sep.1912" on board cds, cover file folds (one affecting left Zeppelin cancel) and creases at top, Fine, a very rare usage; with 1987 L. Nielsen certificate. Facit No. 78. Sieger No. 5A. Scott No. 59  Estimate $750 - 1,000. $0 (Image)