Having had a tad longer to muse over this intriguing glass I thought it maybe useful ,for me as much as anyone else,too air some of my thoughts.If this was a ordinary size glass I would certainly be thinking about a date of 1800/1830,classifying it as a amethyst regency glass and in the folded foot revival period.Backing that up would be the obvious striations,it's leaded,small air bubbles ,small white stones,
And the feel of wear on the folded foot edge.A few things I'm not sure about is the hollow stem either side of the knop,it's size?,what could it have been made for?the colour is a tad paler and in the red,brown spectrum of amethyst,but that maybe the size and the hollow stem giving it a different look from the smaller glasses?Anyway these are just a few thoughts that may jog a few with others,many thanks.