Peace to all! No offense meant here but it seems that this is the only crucifix sculpture in the whole wide world where the image of the crucified "King of the Jews" is depicted as making the peace sign.
In the Bible, Jesus was crucified, was challenged to step down from the cross but did not because He had to do what He had to do -- to die. There is nothing in the Scriptures describing the crucified Christ miraculously unnailing one of His hands and making the peace sign which is a more familiar image in other artworks but not on the crucifixion.
Furthermore, another "miracle" in this sculpture was never described in the Bible: that the Man who walked on water did not miraculously stick His back to the cross while one hand was freely hanging.
Just an observation. And I say again, peace!