Could be a Robert Hanke mark. It looks to me like a pitcher missing the top half of its handle.
Engine turned and bright cut? Meriden did make some nice stuff.
Looks like the kind of airbrushed stencil watercolor produced by companies like Newman Decor, I.B. Fischer Co., Bernard Picture, Harris Picture....
A lot of Canadian potteries used similar glazes. I doubt that it is porcelain, though that's not impossible. It looks like a vase that has been...
Looks like it was done by someone who had a clue. Some condition issues... flaking paint?
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