Posted 13 FEB 1983 off Bouvet Island aboard M.V. S.A. Agulhas. Clear “OFF BOUVET ISLAND – POSTED AT SEA” oval cachet. Cape Town PAQUEBOT 18 II 83 ties RSA 15c Springbok & 8c Gough Island Base stamps.
Features Neutron Research (Potchefstroom), Dept. of Transport Helicopter Flight & Weather Buoys cachets, plus Voyage 28 ship marking. Attractive illustrated Agulhas design & scarce remote South Atlantic polar mail usage to U.K.mail.