Tonga: 6d Rate to New Zealand

Tonga aerogramme form sent from Nuku'alofa (13 MR 67) to Napier, New Zealand.

6d aerogramme rate.

Tonga: 5s Rate to New Zealand

Imperial Air Mail Aerogramme form (form approved by Postmaster General No 71995/2E) sent from Nuku'alofa (23 DE 67) to Napier, New Zealand.

5s aerogramme rate.

Australia: Military Addressee

Australia A-1B (yellow-ochre paper, first fold flap 71 mm wide) sent to a military addressee in San Francisco, US, from Brisbane (22 AU 45).

Air letter service to the US was only established February 10, 1947. the exception were military addressees as in this case.

Malawi: Aerogramme Diverted to Surface Mail

Malawi aerogramme form sent to Finland in 1981. Franked at 5 t, the aeorgramme was underpaid and even contained an enclosure.

Two instructional handstamps in red: "Insuffenciently prepaid for / transmission by airmail" and "Withdrawn from airmail / Forwarded by Surface / route".

Australia: Privately Manufactured Aerogramme

From the 1950s on, when privately manufactured aerogramme forms were first accepted for posting in Australia, these aerogramme forms were marked with an approval text, e.g. "Approved by Postmaster-General for acceptance as Aerogramme No. 2". The approval number related to a license holder, not to an individual aerogramme form.

In nore recent time,. this approval text is missing. The aerogramme form above, used in 2003, only has an imprint on the back panel ("Post Office Prefferred"), next to the Australia Post logo.

Australia: "Broken A" Variety

This is Australia #A-3B,  the broken second "A" of "Australia" variety, which according to Stein occurs on late 1950 printings.
 

Reference
Stein, The Aerogrammes of Australia and Its Dependencies, 1944-1980

South Africa: Postage Partly Paid in Cash

South African Aerogramme sent from Cape Town (5. 1. 1970) to Australia. The 10 c aerogramme rate was half-and-half pre-paid and paid in cash, as is documented by the red "Port Payé" handstamp.

Nigeria: Domestic Aerogramme Used Internationally

Nigeria domestic 1d aerogramme (NGK #2) sent registered to an international destination.
The international aerogramme rate was 6d 1952, the registration fee 3d.

The sender paid the 9d by the 1d domestic aerogramme, two 1d stamps and a 6d cut-out from the 1948 international aerogramme (NGK #1).


Reference:
NGK, Aerogramme Afrika 2012