unused Block Larger Than four 1 quattrino black on grey, a quite magnificent mint block of ten (5x2) showing the complete crown of the watermark, brilliantly fresh with 1mm margin at foot, 0.5mm at top, close at right and outer frame touched or just cut-into at left, with practically complete original, slightly crackled gum. A great rarity in optimum condition. Alberto Diena certificate (1967). Sassone 1. Photo