In my paper ‘On the Altaic numerals’ I made the point that Turkic, like Mongolian, segregated 6–9 by suffixes, and that Turkic further divided these into two morphological groups, 6–7 and 8–9. My good friend Robert Underhill has pointed out to me that I neglected an additional piece of evidence for these groupings, in the formation of the decades; that is, I overlooked the sets represented in Osmanli Turkish by altmiş, yetmiş ‘60, 70’ and seksen, doksan ‘80, 90’. The latter pair is clearly from *sekiz+on and *dokuz+on, and this shows up clearly in Old Turkish and Chuvash. I am grateful to Underhill for having pointed out this additional argument, and it leads me in turn to some further considerations which I take this opportunity to present.