ANK 902 z - Austrian folk costumes, 80 Groschen with net corrugation and plate error in a block of 4 with margin pieces at right and top, mint

Austrian stamp 80 Groschen with net corrugation and plate error IV. in block of 4 with margin pieces right and top from the stamp set ‘Österreichische Volkstrachten’, comb perforation 13¾, halftone rotogravure, mint