I know that
Brian had already elucidated on that.
My original question was raised because there was a conflict in reference sources between vases on an net site and a vase in Gulliver's. I just though it would be nice for the board members who don't have copies of the books, to be able to see what was discussed and the markings on the base of the vase, which are not clear in the Gulliver's book.
And no that vase is not in Truitt's 1880-1940 under Harrach, unless I've missed it re-checking
With regards my Marmoriertes vase, I need proof
I raised the question in the first place because of conflicting pieces on the net.
But I've not been able to match the shape or the decor to Harrach. But then I've not seen the archive collection and I've not got the book to be fair. However Truitt's photographed at the museum and they don't have an example in the book. All their examples are categorised as Loetz.