Thank you for the research - so it isn't just me who is having trubble with this one. I agree that it looks very much like EAPG in milk glass - and the finish would confirm that - though it could have been made in Denmark, Britain, France or Belgium and still look & feel like EAPG.
I have checked Edwards&Carwile, Barlow&Kaiser vol1; all Notleys, Hughes (because they might be custard glasses after all) and several other publications but nothing gives. Next step would be to dive into the pile of Pressglas Korrespondenz - but I would not know where to start. I think I depend on someone who recognises the pattern.