Page 416 - Sierra Leone to 1961 - The Collection
P. 416
Air Mail Services
Second Class Air Mail
This is the generic term adopted after World War II for a combined service covering printed papers and samples.
12 December 1952 - Freetown to London, UK. Paid 4d, although no formal confirmation of this rate has been discovered.
Post-1954 registered envelope from Freetown to London, UK. Rate from 8 April 1954 6d per ½ oz plus 4d registration fee.