Gold Coast. (Official Mail). 1916. Registered 'Official Mail' envelope printed 'On His Majesty's Service' with 'Post Office/ Gold Coast' and 'No 214' top left, addressed to California cancelled by Accra double ring 'May 9 1916' with matching 'R/ Accra' registration label and hand-struck 'Registered' in purple with circular 'Crown/ Passed By Censor' struck twice on face in blue, routed via London, hooded Registered/ London transit 'May 31' with San Francisco and Anaheim receiver 'Jun 19 1916'in violet on reverse.