7 kreuzer large shield, g gray ultramarine, block of four, perforation feature \"unusual perforation hole above and at the bottom in the 6. Position\" (FZLou6), having bright colours extremely fine copy, mint never hinged, faultless condition, expertized Georg Buehler and photo expertize Hansmichael Krug BPP (2023) \"in perfect condition. \", Michel 800.- (free of premium for the unit respectively perforation feature)