A beautiful lot of three vintage electronics experiment kits from the 1970s and 1980s: - Kosmos Electronic Explorer X2000: A futuristically designed experiment kit with a wide range of electronic modules. It focused on educational experiments involving light, sound, sensors, and basic logic. - Philips EE2050 (incomplete): A popular kit from the EE series, designed to introduce young people to transistors, resistors, capacitors, and simple circuits. It was known for its robust components and comprehensive instructions. - Science Fair 200-in-1: A comprehensive experiment kit with which to build up to 200 projects, from radios to alarm systems and simple logic circuits. Popular with hobbyists thanks to the wide variety of projects. Ideal for collectors, retro electronics enthusiasts, or as a decorative or educational item. The kits represent three iconic brands from Germany and the US. They show the evolution of educational electronics during this flourishing period.