The largest poster at Swann Galleries’ upcoming Dec. 15 sale of Art Nouveau-era posters is also the most mysterious. The nearly 10-foot-tall poster, by the well-known Belgian poster designer ...

This chart shows whether Henri Privat-Livemont’s total sales are going up, and if so, whether this is because more artworks by the artist have been offered and sold or because more high-value artworks ...

This chart shows whether Henri Privat-Livemont’s total sales are going up, and if so, whether this is because more artworks by the artist have been offered and sold or because more high-value artworks ...