What is the fine-grained topic of the following text: Updated on 20 Apr 2019: Bas HAASNOOT (1929) is an artist born in 1929 The oldest auction result ever registered on the website for an artwork by this artist is a print-multiple sold in 2014, at Onder de Boompjes, and the most recent auction result is a print-multiple sold in 2015. Only return the topic.
Auction results for artist Bas Haasnoot's artworks.