Number(?) in f36r

[oshfdk]

If the ink had been applied over the paint, the paint pigment particles would have been embedded in that polymer.

Maybe, I don't know. Maybe the ink won't stick to the paint grains at all. Maybe the polymer would decompose after a hundred years. Maybe the polymer unattached to the vellum was scrabbed off by friction of the adjacent folio. What I'm saying is without the expertise and experience comparing hundreds of manuscripts one can't definitively identify the order of layers just by looking at a scan of a centuries old manuscript. If there is an actual 12 written on this root (which is not very likely, but not impossible as far as I can see), I can't see how one can tell, just by looking at the scan, if it was there before the paint.