"Mirror Image"

A wealthy banker likes to impress his friends and one day a friend arrives at his flat to find that the banker has acquired a very expensive piece of modern art.  The art is is a reflective piece ... so reflective that it is in fact a mirror installed in a special frame.  Has he been conned by the dealer or or are we, the audience, like the friend, simply lacking in artistic sensitivity?  All is revealed at the end of the play.