Large Lot Of Jnf (Jewish National Fund) Cinderellas

I recently came into possession of a large quantity of JNF cinderellas of which I will post a number of pictures below. I know there is a Kaplove catalog but I do not have one and I am wondering a couple of things. Are there many collectors of this material (I am not one), do they have value, and is it better to keep the sheetlets whole? I know Londonbus1 collects these labels and hopefully he will weigh in.
There were also FDC of some early Israeli stamps and a few first flights covers which I will post about in a different topic

Previous Posts
http://goscf.com/t/14936 br /

Hi Rod, Yes I saw that thread, that is how I knew of Londonbus' interest. Unfortunately none of his pictures/scans seem to be still available.