This enamelware jug is an unusual teal blue, and is a wonderful period feature piece.
 
The main vessel height is 29cm (11½ inches) with a 14cm (5½ inch) wide opening and pouring spout. The sides of the jug flares down to a 18.5cm (7¼ inch) diameter base. There is a small pinprick hole in the base, so this jug is not currently watertight.
This jug would make a beautiful display vessel for dried seasonal stems, or even as an interior/exterior feature on its own.