Mexico, 1890, 20c Dark Violet, block of 35, o.g., never hinged, rich color and very fresh, natural s.e. at top top and right, some perf separations at left and minor edge nick on bottom right stamp, the largest recorded multiple of the 20c dark lilac. Scott No. 220A  $5,600 for hinged singles. Although issued, no cover are recorded and it is only known unused. $0 (Image)