This set of definitive stamps, issued by Deutsche Bundespost in 1975, is part of the long-running Industry and Technology series. Each stamp highlights a key area of German technological achievement:

• 10 Pfennig – Suburban Train (Nahverkehrs-Triebzug)

• 20 Pfennig – Lighthouse (Leuchtturm)

• 30 Pfennig – Rescue Helicopter (Rettungshubschrauber)

• 40 Pfennig – Space Laboratory (Weltraumlabor)

• 70 Pfennig – Shipbuilding (Schiffbau)

These designs reflect Germany’s engineering excellence in transport, science, and infrastructure. The bold, monochrome engravings became iconic for their modernist style and were widely used in postal circulation. Collectors value them as part of one of the most comprehensive definitive series of postwar Germany.