And here's the third mystery vase from my collection. It's thick 'n heavy and 200mm high. The glass looks a bit like car windscreen glass in colour - very slightly greeny/blue tinge to it. The outside of the neck is round and inside of the neck is square. Pontil is shiny and well finished. I reckon it's Scandi 'cos of the Viking/Celtic like appearance - but I can't find anything like it in any books or on web.