Dear list members,
I'm looking at a manuscript from the Ragunath Temple Sanskrit Manuscript Library, Jammu, j&K. The text is  ajñānadvāntadīpikā by somanātha
The link to the pdf on archive.org is:

Looking at the first few lines it looks to me like the scribe is using the devanagari letter  for both and ब.  Is that common practice in devanagari manuscripts from kashmir?
Thanks,
Harry Spier