Great watch and great work!
Itīs a watch before the Qartz era with Dynotron movement
Technically seen they replaced the automatically or manually winded spring mechanism by an electrical micromotor.
If you associate "automatic" at a watch with "you donīt need to wind it", itīs still an automatic.
I think thatīs the reason why those early electrical Rado watches still had the moving anchor.
That's my theory as well...but they deviated from this practice when the early Quartz and Electrosonic models came out with fixed anchors.