How many Healeys were assembled in Blackheath South Africa

Does anyone know how many Healeys, 100/6, 3000 and Frogeye Sprites were assembled at Blackheath in the Cape, South Africa.

Records from the factory seem to be no existent and the only reasonable reference is from the Mini book, " A South African Mini Story " by Reno Verster.

His records here are quite good but no one, not even Reno himself knows. if they are correct.

A metal badge was produced for each model showing the model prefix, i.e. BT7, BN7, BN4, BN6 and AN5 along with a numerical number stamped onto the badge. These badges were the attached to the firewall of all the cars, Sprites and big Healeys.