Sue is quite correct about the glowing of QPIW, and it's a definite creamy colour anyway. This piece may well simply be white Vitro-Porcelain - the difference compared to milk glass is that the edges of milk glass should appear a tad opalescent, whereas v.p. doesn't.
I always thought sugars were round, but no reason I suppose you couldn't have a rectangular example.
Regret I've no idea as to maker, at the moment, but will have a rifle through some of the patterns. I've seen logan berries, but don't now recall the shape of the leaves.
sorry to be a whinge, but being old and thick I can't quite work out what I'm seeing in the pix - is the logan berries bit the bottom or the side, and what is the unmarked rectangular part - a side or bottom
