VERY RARE MULTIPLE of the Provisional Perforation 16 issue from this very difficult plate. BLOCK CONTAINS MISSING IMPRIMATUR IMPRESSIONS (AK) & (AL). Note** Cat value stated is just for four singles without premium for a block. Well-centred. Neat OXFORD duplexes dated 14th July 1858. No hidden faults. LINE-ENGRAVED EXHIBITION ITEM. Very Fine/XF for an item of this type & period. Please look at all the scans to help form your own opinion.