Something blue

This jug is really big so I gather it has been a part of a morning toilette set. I don't usually buy much blue things as my blue period ended during the late nineties - until then I had blue glasses, blue glass plates: you name it, I got it. Anyway, at the cottage I still have some blue decorations and I could have taken the jug there but somehow it seems too beautiful for an outdoor vase and so it stays in Vårkulla's living room.

I tried to find the blue decoration in the net to date the jug but couldn't find a similar pattern. I guess this is from the 40's or older.