Looks like you have a bit of work to do to get it looking like that again!

It'll never be like the one in that photo but then again I'm not really aiming for it to be in that condition. Back in reasonable shape and clean for a "used" look will do me. Most of it is formed copper sheet so I should be able to anneal it and remove the worst of the dents and get it back in reasonable shape. The main issue is the top ring bit which has been crushed and cracked. The gas system is all there too so I should be able to get that going again but looking at it, I could remove it all together and convert it to electric with no permanent damage or alteration and would be fully reversible.

Some good old fashioned gas engineering in that!