French Colonies. (French Guyane). 1948. Air Mail envelope addressed to Martinique bearing French Guyane Yvert 120, 50c blue and grey, Yvert 129,3f brown and lilac and Yvert 130,5f violet and pale green tied by Cayenne/Guyane Francais date stamp with censor tape and oval 'Ouvert Par/L'Autorite Militaire', routed via Trinidad with 'Opened by Examiner/I.E.8007' label and double ring 'Ouvert Censure/6/Martinique' applied on arrival with Fort De France receiver.