When a coin is inserted, the white door of the hatch
opens.
When an object is inserted in the hatch and the button is pressed, the hatch closes again
and the object rises up inside a glass case.
The expert (a portrait of Nicholas Serota) leans over to inspect the object, then returns
and nods as if he approves.After a short pause he shakes his head, changing his mind. The
object is then returned and tipped out on the floor.
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