But I am not referring to these numbers.
Here is the "12345" sequence on 49v: http://www.jasondavies.com/voynich/#f49v/0.5/0.5/2.50 (top left corner, read top-to-bottom)
Here is the "alphabet sequence", on 57v: http://www.jasondavies.com/voynich/#f57v/0.5/0.5/2.50
at least the second & third from outside circles have repeating patterns of symbols. It looks a bit like a substitiution code key to me.
For reference, the page numbering you mentioned can be seen here, "57" in top right corner: http://www.jasondavies.com/voynich/#f57r/0.5/0.344/2.50
However I have not managed to look through much at all of previous research on this document. Just sharing my thougts.