I bought this today in the charity shop, only because it was glass with a signature on it, which is one of my new buying criteria. This piece resembles a large bucket and has Ulla Forsell 80 engraved on the base. I've easily managed to find out who she is, but can't seem to find many pieces made by her, and no early ones. She seems to be fairly highly rated with a few items in museums, so I was wondering if this is a fake? One characteristic of the glass is that it rings like a Tibetan bell when tapped, it sounds wonderful. Any ideas as to authenticity would be appreciated. Thanks for taking time to look and read.