Balthasar van der Ast A still life of shells, with a wasp and a caterpillar on a stone ledge; A still life with a variagated tulip, a sprig of of bluebells and a shell on a stone ledge with a fly and ...
The middle value of all realized prices for an artist's works sold at auction during a given period, providing a clearer representation of typical market values by minimizing the influence of extreme ...