1. Chapman brothers offer to draw on any form of currency with the Queen's head on it for free.
2. Collectors, critics and show-offs hand over crisp ne'er before used £20 note.
3. Artists hand over a £10 one.
4. and students £5
5. Chapman’s draw 100 (-ish) of these a day over 4 days.
6. £4,800 (at a £12 average) is removed from circulation and effectively spent on an artwork which no one has paid for.