Don't have much of an idea for this one. Nice thin glass - might this be 'teal blue' - no marks tho, unfortunately. The top has been ground and slightly bevelled, and size is about 14.5 cms. in diameter. Three feet produced in the Victorian 'snail scroll' style, showing reasonable wear. No. pontil mark, just very smooth on the base. What sort of use might this have been for - desert bowl perhaps.? Sorry the pics. aren't too good. Grateful for any suggestions, and thanks for looking. Paul S.