Tracks the change in total value of sales, as well as the total number of lots offered and sold annually in the art market. This chart shows whether Hergé’s total sales are going up, and if so, ...

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Tintin, the hero of two dozen children's comic book adventures written and illustrated by the Belgian artist Hergé, turns 90 years old today. His birthday raises anew the question of how to deal with ...

The total value of an artist’s artworks sold at auction over a specific period. This metric reflects the artist’s overall market activity and demand in monetary terms. The middle value of all realized ...