Vintage Castle Grayskull by Mattel. Masters of the Universe.
I'm not sure which year this one was manufactured, but I know it's not the initial run. The very first run of Castle Grayskull took more care in the presentation of the eye sockets. If the black paint is haphazardly sprayed across the eyes, as this one is, it's not the first edition.
The castle is in pretty good shape. Everything is solid and hasn't suffered any sun bleaching or fading.
The throne base is functional, but part of the peg is broken off. The top hinges are snapped off, but the unit still holds together fine. The tabs that hold the unit shut have some visible wear but seem solid. Several pieces are missing, including the trap door trigger mechanism, and the parapet platforms above the throne room.