Tintin and alph-art

This is not really a Tintin album. Herge died well before finishing it, so what we have are a few completed (though not colored) pages, and then what we have are rough drawings of the next pages. The book doesn't even have an ending; Herge died presumably before knowing how to end the story. The story is set in the art world and it's not terribly interesting either. If Herge would have lived to complete this album, everything seems to indicate this would not have been among his best work.