IBM Model M, 1988, German ISO Layout, Serial 1391403 : r/modelm
When setting up Windows 10 and choosing a keyboard, it gives me two options for German: German keyboard and German IBM keyboard, what is the difference? - Quora
IBM Model F AT with GERMAN LAYOUT | The legends are true
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IBM 1394416 Vintage Keyboard Computer Keyboard Qwertz German Retro Old 1995 | eBay
German ISO IBM Industrial Model M Keyboard (P/N 1394958) : r/modelm