1 Fr. Official stamp, overprint in type I, variety "unperforated", block of four from upper right corner, field 9 / 10 and 19 / 20, field 9 with overprint error VIII "R above ground off", in perfect condition mint never hinged, photo expertize Ney VP (2016) : "the quality is perfect. ", Michel 7.200.- (free of premium for the overprint error and the scarce unit! The overprint error appraises the ninefold the normal stamp - in that case became be at the unperforated issue a huge Michel value to calculate. )