It’s an oil painting of the cover art for Tintin in America, done by the hand of HergĂ© himself and it goes on sale tomorrow.
There are a lot of pictures missing, I regret to say, but the auction catalogue is a sight to behold for anyone interested in European comics.
I recognize several of my favorite Tintin covers, which means the cover art was consistent for quite a few decades, mainly after the first couple of printings.