Chances are it was struck to commemorate our industrial history. It goes thus: it is meant to start with a Roman chariot wheel at the centre (can’t see it myself), outside of which is a bunch of gears representing the industrial revolution.
Except there are 19 cogs. And since each cog will rotate its neighbour in an opposite direction, well as any engineer could tell you, odd numbers don’t work. The whole shebang would grind to a crunching halt.
But the coins are still out there, the one I saw today dated 2002. Is it any wonder?