Zonal rates (re-introduced)
Zonal rates were first addopted in 1934. We are uncertain when they were stoped, but would guess that this was about 1939 at the start of World War 2.
Charge Weight
Zone 1
6d Unknown weight limit
Zone 2
1/- Unknown weight limit
Zone 3
1/3d Unknown weight limit
We have no information at present as to which countries were included in which zone band.