Canada 26iv

1875 Five cent olive green on medium vertical mesh wove paper, perf 11.75 x 12, a visually striking and very elusive mint block of four, quite well centered with lovely fresh colour, remarkably retaining its characteristic, dull, streaky original gum, relatively lightly hinged; couple negligible blind perfs at foot, a rare and beautiful mint block, Very Fine;
2016 Greene Foundation certificate (Unitrade 26iv; catalogue value $20,000)