Sorry for the delay in replying Ivo and thank you. I did quite a bit of searching in the meantime, just to double double check as I felt the same as you, and believe you are right.
I've found a good few Bohemian bechers that are described as 'rubinglas' and show as pink rather than red on screen, but they are completely pink interiors with a clear overlay on top, not pink overlay on top. And no cutting like this at all on any I can find.
I know I dig myself into corners frequently, but I am convinced this is American and I think it's probably 1850-60 ish. The blue jug I put on another post, (listed by antique seller as possibly Sandwich
http://www.glassmessages.com/index.php/topic,60735.msg342549.html#msg342549 and here
http://rgantiques.com/Cobalt_Overlay_Pitcher.htmlhas good and obvious similarities with my goblet, but there are teeny differences - in that the ovals are slightly pointy top and bottom on the jug and the horse shoe shaped design ( where the bottom of the bowl meets the foot on mine), is all pointy ovals rather than upside down horseshoe design as mine is. It's definitely the same design though.
Edited to add - Actually looking at mine again, I think they are pointy on mine as well. It's just that the pink photographs particularly badly compared to blue and looks blurry, whereas the blue photographs very crisply and shows all the definition well. So perhaps not the differences I noted to be honest.
I cannot believe this is Bohemian because of the colour/style of overlay and design, and the way the foot is applied and has the colour overlay on the base of the foot and then cut. And I don't think the jug is either.
I equally don't believe it is French or English because of the indented rim (aware Baccarat did use this rim on some goblets but still don't believe it is French)and the design. And again I don't think the jug is either.
(Watch me turn out to be wrong now

)
Am pretty convinced it is American but just to work out whether it is Sandwich or Mount Washington or New England Glass Company really.
I've had discussions and have sent emails and had some help which I'm trying to pin together into some evidence. I have found one piece that has really good similarities but can't pull it all together yet. If I find anything to clarify or hear anything more I'll post.
Any more help very gratefully received

m