unmounted mint Block Larger Than four 6c Columbian (235), B.R. imprint, 'Z' and plate no. 104 and block of ten, brilliant color, never hinged, well-centered for this, few stamps at R. with trifle heavy natural gum bends, few slightly telescoping perfs, faint crease in selvage at R. and small tear in selvage at B., still appears very fine-extremely fine and scarce multiple, ex Kobacker, Scott retail $2,200.00photo est.