Se-Tenant: one of stamp is imperforate, other one is perforated by comb 12,25 on below side only!
In Mi Z2 designs, the bottom right of the N in "NOTOPFER" is a sharp point, A line drawn along the right edge of the diagonal leg of the R in "NOTOPFER" will pass exactly in the top left corner of the R, and the right side of the "E" benne "STEUERMARKE" is a bit to the right of the right edge of the N in "BERLIN"
