The original first values issued in 1969 were the 25c only available in bookets of 4 and the 1Guilder25 issued in counter sheets of 10x5. Other high values were issued later on but what no one seems to realize is that by then the design had been changed!
This change of design did not find its way into the catalogues or handbooks and since stamp collectors are faithful only to what is in these books will not likely realize what they have in their surplus of stamps to be traded or swapped! Often not having these stamps in their collection at all!
I consider this a general feature [or flaw

The experts also would not bother about them either and neither do the jurors in (inter)national exhibitions! What is not in the book does not exist, cannot be valued and not be a reason to be given extra points ....
In another thread here in this Foro I pointed out the fact that German collectors preferred to have a 25 mancos / missing stamps in their DDR collection rather than questioning the Authority of their National Philatelic Bible Michel! It is the other of two sides of the same story!
to be continued ....