Bob, please don't speak to Sue that way. Even if you don't appreciate her knowledge, which is considerable, you're on very thin ice talking to her that way.
I am confident that it is a fake but I tend to be guarded in my expression, just in case I turn out to be wrong, even though I don't believe that will happen in this case.
I post it for educational purposes.
Yours looks like that one's brother or cousin.
There was a guy named Flessa in Germany who was making chinas which were being passed off as old. Some variations on the spelling: Flesse, Vlessa.
I think this might be one of the ones he made:
I don't think there's anything wrong with showing the pictures. They're from ebay. They're educational. I know that Sue had reservations about showing the real ones because she didn't want the fakers to know how to improve their product. But if someone else had some undisputed ones to post, I wouldn't ask them to be removed.
The black on those ends looks like what we see on a magic marker marble. Do you think the black was even painted or would you guess it actually was from a pen?
Is this it?
http://www.thecloroxcompany.com/company/heritage/bottle-guide/screw-top-bottles/
I looked on the cork top page and didn't see that shape.
They say the first clorox bottle was five-gallon jug.