1851, Isabella 6 cuartos black, horizontal block of 12, deep fresh colour, little abrasion at lower left, otherwise clear to large margins, tied by spider cancel with adjacent “VICH CATALUNA 11 JUL 1851” to large cover to Barcelona, with arrival mark. Some usual light creasing. The largest recorded block and most important item of this stamp. Certificate Jose Soler AIEP (2017).
