Coal stove. The added mass increases radiant area.

It appears to be on the fritz... Pablo looks cool as a cucumber  ;o)

Love the way the shot was set up - Picasso dead center on the massive vertical shadow. One artist capturing another. Beautiful. 

It is an Alsatian stove created in Alsace, France where wood stoves were first created around 1490, stoves created there were originally wood burning, a clue might be the one pictured here in Fouday Church (Alsace is a region, Fouday is a town), notice the wood in the background.

The top part is a heat exchanger, my guess this one is circa 1800.

Multi-fuel design, has a grating on which the fuel rests as coal needs to be fed air from underneath. Wood doesn't and is often preferred as fuel because coal is filthy and makes a large volume of toxic ash. The pot-belly stove is a similar design. 

I've had a variety of stoves in the shop over the years and currently use a Lange box stove for heat from wood waste. 

does the mass above recirculate the gases to burn off pollutants or like miles said just for the mass. probably just for the mass i think. people weren't too worried about pollution back then.

cool looking though and i bet it could put out some btus

hehehehe he said put out

Go – the closest thing to that would be a Tulikivi fireplace (Finnish), that circulates the burning flue gasses to capture heat that is then radiated from the mass of the masonry, they also pollute less because they burn so hot (vaporizes the wood)….all way too hot for the subject stove…all this one is doing is providing air cavities around the flue for colder room air to pass over by convection, providing more heat, increasing efficiency.

Ah, yes convection

Cool thanks Mr. Carrera