design wise this looks similar to something called a 'helmet' shape - a fashionable design from the early C19, apparently - although this is probably about a hundred years later in date. Pressed, with two mould seams, and sits on what looks to be a pressed brass pedestal, which show no signs of plating of any sort. Thought it would show deep purple under a strong light, but doesn't, so assuming it really is black glass. Don't get the feeling it's British - but could be very wrong - I've seen shed loads of milk jugs but never one quite like this, so if anyone has any ideas would be glad to hear, and thanks for looking.
