Large 19th century English Victorian cut glass wine carafe mallet shaped decanter with facetted neck and lozenge cuts to body.
Similar types are refered to as Ships decanters as their body has the mass of the wine at the base for stability. many of these "ships" decanters however never saw the rigours of the sea, it was just a practical design for stability.
Large decanters such as these were also particularly used for wine. The surface area within the decanter allows aeration of those heavier reds....for more details please go to www.antiquesdesign.com.au