For this thing
Sold at Sotheby's in New York last night. The previous record was $179m.
There's quite an interesting story behind this piece and how it made its journey to yesterday's auction - but here's the gist
Once owned by King Charles I, it disappeared from view until 1900, when it resurfaced and was acquired by a British collector. At that time it was attributed to a Leonardo disciple, rather than to the master himself.
The painting was sold again in 1958 and then acquired in 2005, badly damaged and partly painted-over, by a consortium of art dealers who paid less than $10,000. The art dealers restored the painting and documented its authenticity as a work by Leonardo.
The painting was sold on Wednesday evening by Russian billionaire Dmitry Rybolovlev, who bought it in 2013 for $127.5m.