This is a panel as removed from an early Boeing 727. The oxygen regulator panel controlled the flow and availability of emergency oxygen to the flight crew.
The panel is grey in colour and in good overall condition. The panel retains some regulator equipment on the rear, but of course is no longer certified for any real world or functional use. There are two wires which we expect control panel backlighting though this has not been tested.
An ideal addition to your flight simulator.