I don't know whether this is a definitive criterion... I have a number of pre-war Zeiss Contax lenses that do not follow this progression, and also have a circa 1940 T-coated 35/2.8 Biogon that follows the "normal" progression of 2.8, 4, 5.6, 8, etc.
My oldest Contax lens is from 1936 and has the normal f/stop sequence. Actually, even my 1925 Voigtlander AVUS 9x12 plate camera also had the usual sequence.
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