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broadcast, radio sets, Philips type 2511, Netherlands, 1928, technic, technics, historic, historical, clipping, 1920s, 20s, 20th century, HF, screen grid, screen grids tubes, luxury device, loudspeaker, loud speaker, audio, still, antiquity, antiquities,
![Philips Radio Poster Local 1930s poster advertising radio sets made by the Dutch electronics company Stock Photo - Alamy Philips Radio Poster Local 1930s poster advertising radio sets made by the Dutch electronics company Stock Photo - Alamy](https://c8.alamy.com/comp/A3FPCG/philips-radio-poster-local-1930s-poster-advertising-radio-sets-made-A3FPCG.jpg)