I have seen nothing here to convince me that it is not from Murano, and it's water staining was accompanied by some ingrained dirt and thicker calcification, suggesting some age (some age I do not refer to in my listing). Although I cannot claim it's exact age, I am mostly aware of it's provenance.
I have added a very clear photo of the base to my listing, not avoided doing so, as the Japanese Bond Ware ebayer - of the thread you linked to - had (I have not seen Bond Ware without "Japan" on it's base).
I have not claimed "Poli" or "Seguso" or any other maker, and neither do I say "probably by" any of them. I am selling it as it was sold to me, following an inconclusive appraisal here which, as the evidence of this thread will ascertain, rather made me feel like I had been sent to Coventry anyway, and I had listed the item before anyone actually replied to my repeated appeals for "best practice".