The leaflet advises that the extension will open July 23rd 1971 but that Pimlico station will not open until Autumn 1972.
LONDON TRANSPORT VICTORIA LINE TO WALTHAMSTOW CENTRAL DIAGRAM OF SIGNALLING 1968
Pimlico 30 - UTS London Underground ticket - London SW1V - Victoria Line
Brixton 02 - UTS London Underground platform ticket - London SW9 - Victoria Line
Brixton 01 - UTS London Underground platform ticket - London SW9 - Victoria Line
Brixton 12 - UTS London Underground ticket - London SW9 - Victoria Line
Brixton 04 - UTS London Underground platform ticket - London SW9 - Victoria Line