Hi,this glass is about 5" tall,a browny amethyst colour with a lot of bubble and mould blown,I would say soda glass with a folded rim and very light,there is flat wear to the base but also some in one direction!?,there's also hint of wear to the inside of the rim,it has a sort of belly button broken pontil,Chinese like or maybe Israel maybe,the only thing is at 50p is it worth trying to fool anyone,any thoughts many thanks.