British West Indies. (St. Lucia - Costa Rica). 1944. Registered Air Mail envelope addressed to St. Lucia bearing Costa Rica 5c violet (4), 40c blue and 60c blue tied by Port Limon date stamp 'Dec 15 44' with framed hand-struck 'R/ Costa Rica' and 'Abierta Defensa' censor label, routed via British Guyana 'De 20' and Trinidad '5th Jan 45' with oval 'Registered/ Castries, St. Lucia' 'Feb 22nd' and 'Opened by Examiner/ I.T.T. 4' applied in St. Lucia. Scarce item.