Rhodesia & Nyasaland: Underpaid Aerogramme Diverted to Surface Mail

Rhodesia and Nyasaland 6d aerogramme sent for Zomba (25 JUN 57) to the US. As the aerogramme rate to the US was 1s, the aerogramme was short paid by 6d, i.e. 50%.

Two-line instructional handstamp “Withdrawn from Air Mail / By Surface Route” to indicate transfer by surface mail.