Indian Air Mail prestamped envelope c/o Base Air Post Depot, Karachi

[Jim Mackay]

I'm confused by this envelope!

Pre-stamped and 'By Air Mail', and pre-addressed to Base Air Post Depot, Karachi, so how would it have been distributed for use by Air Mail within India but outwith Karachi?

Jim

[Neil Williams]

My interpretation would be if the sender didn't have/wasn't sure of a fixed location to send the correspondence to,  BAPO Karachi tracked, as well as possible, postings and unit locations in India/SEAC. It was a clearing house. I believe similar arrangements existed for other theatres - eg in Cairo, for the Middle East.

Neil W