doesn't look like this shape is on the Board's archive for Ed. Moore, and a quickish look in Thompson and Murray draws a blank, but then again I might have missed seeing it. Unfortunately, the pattern is similar to many other pressed designs - stars, daisy wheels, sun-bursts etc. enclosed within straight lines, so might be lurking somewhere quietly.
Most of the book images of pressed glass are of Rd. designs, for the obvious reason that they can be linked to a maker and date which makes them identifiable quickly, and more interesting, probably.
Someone like Fred might have the answer for you, but the lack of replies is a bit ominous. If you're at a loose end you might send the museum an email and ask for the source for their suggested Ed. Moore attribution.
I seem to recall that in the last year or two, there was a proposed publication, the intention of which was to provide some guidance for provenance for some of the north east pieces - I could be very wrong but haven't heard more (;-)) - about this project - perhaps nothing came of it.
sorry this doesn't help at all.