Way
way out of my comfort zone - it came as the odd one out in an auction joblot of glass I'm more familiar with.

20cm diameter, 10cm tall. Obvious mould lines up either side of the bowl, and around the rim of the foot. The lattice decor is pressed, but the wavy rim has been hot-worked, it appears. Fair amount of wear to the base rim.
Any clues gratefully received.