Plate 1: 2nd August 1937
Ash moved the 42mm imprint normally encountered between the central gutter
of panes, to the centre bottom of each pane for this denomination. It's
central location is a unique position for the entire zoo series.
This was the precursor of producing, all
denominations, all panes with imprints in left corner.
In this one (and beginning) instance the arrangement was most sensible. The
high value 1/- panes were intended only to be issued in single-pane sheets
to post offices (The 1/- Anzac has a similar history of release). It was
necessary, therefore, for these printsheets to have imprints on all panes to
make them indistinguishable.
happens, dual pane post office sheets were also issued (but are scarce).
Such interpane gutters can therefore be detected for this plate because of
lack of imprint anywhere.