2d Scarlet KGVI Die II issued August 1, 1938. The issue of the Die II stamp coincided with the introduction of the new perforating machine gauging 14.75 x 14.
MUH, this vertical pair is the very scarce medal flaw variety, listed as 184b in Stanley Gibbons and 188e in the ACSC (Australian Commonwealth Specialists' Catalogue).
The lower stamp has the variety.
