The 30 Gr. blue in vertical strip of four with ever hds. Cancellation "Frm 30 9 74" on piece, unity which is in fresh color and centered well, slightly unevennesses at the top margin of the upper stamp patina, the on piece supported otherwise very well perforatedly, a little a little (insignificant), expertised Grobe, Pfenninger, certificate Hennies BPP and certificate Brugger BPP: Vertical strips of four of the 30 Gr. stamp are " rare giving robbery. The overall condition is above average " good for a larger unity of the 30 Gr. stamp.Michel, 3.500.-- very rare and decorative piece!