It seems to have a hammered surface effect like with arts and crafts pewter, but that seems to be the photo, I can see the ribbed effect you are talking about after closer inspection - I have seen this effect on vessels c1890s to 1930s - but mostly art deco period
I would call this a 'Rummer' which is a type of drinking vessel often seen from Georgian and Victorian eras
As said I don't think it is from that period, sets would have been made during the arts and crafts period in the UK when old shapes were being reassessed
The ground pontil can mean little as so many companies used it, Stuart, Powell, Webb, Walsh Walsh - to name but a few
I do think it is English
Sorry can't be of more help - you could try
http://www.whitefriars.com/index.php as they are really good with this period of British glass
Adam D555 :twisted: :twisted: