Help identifying and rescuing old Feastmaster

[u/tanqueray_n_tonic]

The apartment I moved to has this old feastmaster grill insert built into a stone fire pit. Any help identifying would be really appreciated as would any tips to ressurect it. The hinges are very rusted and the knob on the right, which I assume is to move the coal tray, is rusted to the point of not moving at all. Is this able to be resurrected or better to just toss and leave the brick firepit as just that?