iẓhār nūn (& iqlāb mīm)

The Amsterdam professor has discovered the iẓhār nūn
both after tanwīn:

and "normal" nūn sākin:
 
and even one example where the extra green nūn is misplaced -- thus showing that the colour signs were added in a second phase:


should have been like this

I'm a bit disappointed that van der Put has never seen or heard of iẓhār nūn, although I have published about it. I first discovered it in Bombay reprints from Indonesia, but later both in Indian mss. and prints. It correspondce to iqlāb mīm: