I am adding and looking trough the Indonesian banknotes. I noticed in the Netherlands East Indies there are a few notes which are merged, which in my opinion should not be the case, due to the differences especially on the back.
See for instance the 10 Gulden of P53 and P62:
Here is a picture of the P62 too.
Though the later of the P#s do not seeme to have been issued.
If there are agreement of splitting them, then it should be from P53 to P65, except P58 and P61.
Tagging referee: @Linketake42
There may be mistakes, but thanks :D