Stamp size Die Proof in Brown printed on card.
It appears that at least 8 plates were used for this value.
Upper Plate 1
Upper Plate 2
Upper right Plate 5 with side imprint and engraved PO 1162.
Lower left Plate 8 with side imprint and engraved PO 1162.
This is location on the plate that would normally contain lathework.
Lathework Type B.
Lathework Type B with 'X' precancel.
Booklet pane of six.