K6 (?,1964)

The following photographs are from Peter Hardy, but I am assuming they are models of K6 as the top photo has ``K6'' written on the bottom RH side. Based on the TEK 64 number I am assuming it dates from 1964. The rear of this model is very similar in design to K9. Anyone know more?

tek64_front_small.jpg tek64_rear_small.jpg

Rob Allan