2004 saw the 150th anniversary of the Great Laxey Wheel, Isle of Man. To commemorate this, the 2004 Christmas 50p coin issued by
the mint shows the wheel on one side, with the normal Queen Elizabeth II head on the other. The coin is legal tender in
the Isle of Man, but not the UK.
I have only found a
very poor image of the coin.
Laxey wheel on Isle of Man 50p coin