Ancient face carving

I found this face carving buried about 5 feet underground while pulling a tree stump. It was encased in a thick layer of hardened sediment, which I painstakingly removed, one grain at a time. I do not know what culture or people made it, I do not know exactly how old it is. I do know that it's obviously human made with features such as: an eye, nose with nostrils, cheek bone definition, an ear, and an upper lip with the curvature apparent. It's an awesome find and an archeological anomaly that belongs in a museum. It really deserves investigating, but I'm no archeological expert. I do need money, however, so I'm willing to part with it for the right person.