Philips Schuco ABCD
Philips (Germany) made a new series just called Electronic and with letters in the name and titles like Aufbau, Basis, Expert, Profi.
Most are just repackaging of EE2000 and EE3000 series designs with newer components and experiments.
I have the A 6102 Basis Lab, the B 6203 Expert Lab and 6103 C-D Aufbau lab, effectively in total the 6104 D Profi Lab. And a separate D 6104 kit, an enormous amount of experiments!
I have, also made by Schuco, the 6303 (Glasfaser technik) and 6502 (Physik B Solar Technik)
The kits were transferred to Schuco in the nineties and many variants were made, mainly for the german language market. Schuco stopped several years ago alas with electronic kits.
Download here the 1985 Schuco brochure with all kits like: