“ […] based upon Herbert Bayer’s 1931 universal, modern serifed alphabet. Although the ‘modern’ style appears to be a radical departure from his first sans single alphabet of 1925, the structure of this later serifed style is still grid based and geometrically constructed.” — The Foundry

No uppercase. Not to be confused with Bayer-Type (Berthold, 1935), which has an uppercase and is different in most glyphs.