The Hand with its mysterious gesture, is a hand in action of the coolest jazz trumpet player Miles Davis!
It is not an original image as I thought, but it was inspired by a photograph of Irving Penn used on 1986 Davis's Album Tutu
Here is the original use!. The artist here is Rachel David (no relation to Davis), but I am not 100% sure.
I was asking originally, what does this the gesture means and the answers were thoughtful and surprising.
Try the gesture your self, I can not keep the ring finger strait!