I have a large collection of notegeld arriving but it not my area of knowledge, so how I tell the good, bad, from the ugly I have no idea. 4 albums.
some of the books I use Edit to add: IMO, the book by Courtney Coffing isnt worth buying, even if it us cheap. It is a checklist, and has no ID information.
This is just part of a Notegeld collection I purchased but I paid quite a lot of money, so as someone who knows nothing about them, I hope there might be something of value in there. Folder 2 now added. Only took photos of one side because their are about 450 notes.