question for Game of thrones fans

[Tauren Chieftain]

Does anyone know the weight of sword Mountain used against Oberyn Martell. Or at least is that real sword (I just want to know does it have weight that real sword of that size should have or is it made from lighter material to make it easier for actor to use it.)

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[Calpal]

i actually have no idea.
but that does look like a heavy ass sword

 

[Tyris]

No exact weight but the Mountain irl is one of the world's strongest and said it was heavy

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