Hi does anyone recognize this interesting and stylish piece of glass .its very art nouveau in shape ,has an irridescence 24.5cm in height by 14cm across the base .I think it may be a lamp base as it has a hole in the base and is open at the top rim and three raised areas on the base .Signed on the base which looks like AMT de France or could be Art De France ? very smooth to the touch and of good quality .Any thoughts please ?
thank you