Essor ProfSchön gives for the Egypt, 50 piastres 2007 (N#9329) two varieties: 678.1 without signature and 678.2 with signature.
I can't a missing signature but I do find some other differences:
Difference between Schön# 678.1 (left) and Schön# 678.2 (right):

Hello, 5 years later but better late than never :D ,
so what Schön 678.1 without signature referring to is this coin, notice the clear space left for signature under the hair just left of the year.


SjoelundI have the thin and stylish date. Unfortunately I don't have any doubles... of that year.
Do you know how the signature should look and where it ought to be placed, since I cannot find (could be my coin doesn't have one!!!).
Ole
as for the signature looks like this

There is a third variant with no clear space for the signature and no signature as well, but I do not have a clear picture for it right now.
I am working on adding these varieties to the catalogue very soon