I can't pass by a nice Arts and Craft vase, and this is a lovely one. I've looked and looked and have not found another with the same form, so I'm not sure of the maker, but I'm pretty sure earlyish 20th century American. Possibly Zanesville, which I always gravitate to! One of the things I love about this green glaze is that it is gorgeous in combination with anything, and looking at it now makes me look forward to the first daffodils of spring. Really pretty.
Approx 5" t x 5 1/2" widest d. and in very good condition, with no chips, cracks. One glaze skip and a bit of irregularity original to the piece. No mark that I can see on the underside. There appears to be an old handwritten price written in red.