Now i will confuse the issue , i have an ER goblet 52/77 the Queens head is like yours but the matt and polished are the other way round ie your polished bits are matt on mine and vice versa with the same squiggly bits around the edge , all the lettering is matt , on the base is 289 over 1000 then WH and a seperate CG . Probably Caithness Glass . :huh:

ps my goblet is trumpet shaped .