Paul — I've handled a fair amount of unmarked Walsh
Pompeian and its lookalikes, and I still wouldn't positively Id unfamiliar pieces as Walsh unless I found the pattern in Reynolds, either in Pompeian or in one of the similar ranges like
Iridescent.
Why?
Well I've seen very convincing brand new
Pompeian on sale in the souvenir shops at Segedunum and Arbeia, much more so than your Egyptian piece.
btw only two weeks ago I saw for the first time my favourite treasure of any museum, the birthday party invitation sent by Claudia Severa, wife of the Briga garrison commander, Aelius Brocchus, to Sulpicia Lepidina, wife of the Vindolanda garrison commander, Flavius Cerialis, see
here. It's quite stunning, but modestly displayed, so modestly that in the half hour I spent looking at it and the other tablets on display, not one other person examined it — and in a busy British Museum on a Saturday! Those last four lines, penned by Severa herself rather than by her scribe, are quite beautiful, and easy to read once you get used to the script.
I can't help wondering how much Pompeian glass Severa and Lepidina had in their homes.
Bernard C.
