104 pages are not enough for the standard of the album. Hergé realizes the final double page, 105-106, which is published by Le Petit Vingtième on August 10, 1939.
This last supply is a joke unrelated with the rest of the story: Hergé uses once again his theme of the immeasurable stupidity of Dupont and Dupond (Thomson and Thompson). The twin policemen forget that their aircraft is a seaplane, go to panic when it comes down to the sea and laugh so hard of their own naivety that they fall into the sea when leaving the plane.
The original drawing 40 x 60 cm of this double page is estimated € 600K for sale by Artcurial in Paris on April 30, lot 157.
On 1 September 1939, Germany attacks Poland. On September 3, Britain and France declare war on Germany. Germany begins immediately the invasion of Netherlands, Belgium, Luxembourg and France.
Hergé continues to work. The first page of L'Or Noir is published by Le Petit Vingtième on September 28, 1939. This story is interrupted in May 1940 by the intensification of the military operations. Hergé temporarily abandons L'Or Noir and begins publishing Le Crabe aux Pinces d'Or in October 1940 in the supplement for the youth of the newspaper Le Soir.
SOLD for € 820K before fees