Watercolor Copy of "Interieur met laddertjes"

Copyright Infringement. Watercolor on paper, no year. We have no reasons to believe this work was made by Constant (1920-2005). The work was submitted to us by the owner who had bought it at a small auctionhouse in Amsterdam in 2008. The owner has no intention of reselling the work as an authentic work by Constant (1920-2005).