Lynne, please forgive me if I under-estimate it - to me it looks like a very early 'promotion' glass for an unspecified article... mustard? The base looks ground
Hi Pamela, I think it would be too big for mustard, it is 140 mm tall, and 100 mm diameter across the rim, would hold about a half litre I would say!
The base isn't ground, except for the central pontil. There is quite a lot of wear to the outer edge, so yes, it may be early.