U.S. #806b John Adams Booklet Pane of 6, 2-1/2mm vertical gutter

U.S. #806b 2c John Adams Booklet Pane with 2.5mm Vertical Gutter MNH
These panes, printed on what are known as E.E. plates, were printed in the Type II 'new design' and have a 2-1/2mm vertical gutter pair. The pre-E.E. panes have a 3mm vertical gutter.