Quote:
I have a stamp graded F-VF that I would like expertized.
A curious statement as having a grade implies that it already has been certified.
I suspect rather, you mean that you own a stamp which YOU believe would grade F-VF.
I agree with Andyrich, a scan would move this from a theoretical conversation to an actual one, as many stamps don't really require expertization to confirm their identity, but instead a third-party evaluation of condition.
That said, why not just contact the expertizing organization and ask them? Only they can give you their answer. We cannot.