1937 flight cover from Brussels to Trivandrum via Karachi. Travel time is 10 days...
Despatched from Brussels (Belgium)..5 Jan,1937
Transit station @ Karachi...9 January.
Delivered @ Trivandrum..15 Janunary.
Year of issue for Service 6 Cash...1942 Year of issue for Service 8 Cash...1948 Looking for precise dates of the issue of the above cards