Beautiful quality but unmarked, possibly due to an iron red inclusion in glass on the base. Rings like a bell - it has a lovely long, deep, tone.
Heavy (still no scales). Approx. 20cm dia., by 13cm high. Polished pontil.
I think it is a moulded design, but it would have needed an expensive mould as it has very fine detail.....I can get my nail into each vertical line and the thin banding. Possibly moulded and cut. I think the frosted finish on the alternate fans must also have been done afterwards.
The design appears to me to be a transitional one, between 1920 and 1930s.