Elizabeth II Definitive Stamps 1956 to 1961
Two Shillings and Sixpence Black & Chestnut
                                         31 December 1957 - Freetown to London, United Kingdom.
                                             2 x 1s 3d per half ounce airmail + 6d registration fee.
                                                    29 July 1958 - Freetown to Chicago, USA.
                                                 2s per half ounce airmail + 6d registration fee.