I thought this might be Whitfriars because I have a vase the same shade which was ID'd on Is it Whitefriars? but I can't find it in the catalogues, and the base seems wrong for W/f as well. It's a well-type like the Sklo Union birdbath bases. Does anyone recognise it please?
Oops! forgot to add the size: 5" across at widest parts, 2" high (or 127mm and 51mm for metricated people.)