1924 to 1937
The 3d and 4½d values were added to the Georgian series on restoration of 1½d postage in May1294.
A revamp occurred for all issues of KGV and Roo on that date. The 3d was introduced as the basic foreign letter rate and, separately, a registration fee.
Harrison used one of the 5 blank working dies to produce the first pair of electros. All printed in blue shades.
There was only ever one Die, subsequently modified by Mullet(Die1a) and Ash(Die2) respectively to fit their methods of plate production.
The eight electros were produced for this value can be summarised as:
Only the die (and electro) change on KGV paper can cause confusion. The other die and electro differences are on paper and / or perforation boundaries. The differences between the three dies, and the electros are described in the relevant sections.