Left-handed Mousterian hand axe

As I was browsing through images of Mousterian (therefore Neanderthal) stone-age tools, I found this description of a left-handed axe, made of jasper, that "fits like a glove in the left hand only:"

Natural openings in the jasper used as finger pockets. Ingenious and masterfully executed grip design with finger pockets on BOTH sides and a round, bulbous proximal end to distribute impact shock across entire palm.