Hi All. Hope someone can help. Can anyone id or provide some pointers to find the origin of this clear glass ashtray found in Yorkshire. Clear blown glass with a polished base and a ground out polished pontil. Decorated with incisions from top to bottom that I believe have been cut. Very heavy for it's size - it weighs almost 2 kgs and only measures 15 cm in diameter and is 7 cm tall. Any help would be much appreciated.