Six grew up in Amsterdam, from the age of 11 living in the building on the Amstel that houses the Six Collection, including the Portrait of Jan Six.
[3] In 2009, when the company started to downsize,[4] among other things wishing to close the branch in Amsterdam, he resigned at Sotheby's.
[2] He started his own art dealership in the Old Masters, Jan Six Fine Art,[3] located on the Herengracht in Amsterdam, working in partnership with the London firm Hazlitt, Gooden & Fox.
[6][7][8][9][10][11][12][13] Shortly after having the portrait attributed as a Rembrandt a fellow art dealer Sander Bijl accused Jan of unfairly breaking an agreement to co-purchase the painting.
For a second opinion Bijl went to Jan who agreed that they should split the cost and potential earnings.