Max has kindly offered two of the large format posters if you can answer the following question based on Henry Beck's design of the Paris Metro map.
"The poster for sale at the London Transport Museum is actually Henry Beck's second attempt at the Paris Metro. His first one, which the RATP turned down, was created around 1949. It is shown in Ken Garland's Book 'Mr Beck's Underground Map' (Capital Transport, 1994).
Leave your answer in the comments below. The first correct answer will get the London Railways poster, and also the Paris Metro poster above. However, even if you're not first with the right answer, anyone who makes a guess or leaves an interesting comment will go into a prize draw to win two posters as well. Don't forget to leave an email address, blog or website so I can contact you if you win.
You have until 11.59pm UK time on Monday 22nd December to enter. Best of luck and thanks again to Max for kindly donating the posters.