Machiel Kalf had these at Newmarket. There is also a superb poster which is the same except the man with the flag is in front of the car. The design is absolutely superb, and I don't usually gush about much.
Machiel can be contacted via Mogtalk - I don't think he logs on here very often, but I believe that you will be able to buy one and have it sent over.
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) Plus 4