Help identifying a chess set

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as the title says, I found a chess set and was hoping to get some clue as to where it came from. I know absolutely nothing about it other than that the board is 10 inches and is weirdly diagonal. The pieces are also almost certainly handcrafted - you can see that a few of the rooks are a bit crooked. The pieces are definetly not made of wood. Any help would be appreciated. Thanks!