The only changes listed are serial numbers. Checking the SCWPM Specialized Issue shows the second note differs from the first by having engraver's initials FD at lower left corner of obverse.
You are right about SCWPM listing that difference but I couldn't find a photo of a banknote with initials at left. I wonder if it's not a mistake in the catalog....
Look closely at the very corner on the lower left of the obverse of the second link you posted and you will see the letters FD. Must have been hard for the original cataloger for the Specialized Catalog to spot. But not a mistake.
Will
Status gewijzigd naar Goedgekeurd(Sulfur, 21-sep-2020, 19:27)
Status gewijzigd naar Geopend(Sulfur, 21-sep-2020, 19:27)