An original drawing by Hergé for the 1942 edition of Tintin in America, still used as the cover of the book, is expected to fetch at least €2m (£1.7m) when it is auctioned next year.
The illustration was done in Indian ink, graphite and corrective gouache, and was used for the cover of the 1942 “full-page” edition of Tintin in America. It was used again for the cover of the 1946 colour edition, the version still used on the book today.
