So I just noticed that there is a small gap between KM126 and KM128
https://en.numista.com/catalogue/pieces4280.html
https://en.numista.com/catalogue/pieces6509.html
Based on the reference of Schön listed there is also the number 57 missing (or not yet listed in numista), but they don't follow the same order nor I have their book to do a full cross check between both catalogs... This might be a COINcidence...
Any Idea what could happen here? and if they (KM) and Schön have done this kind of mistake in any other country Catalog?
Many thanks in advance!