Johan has more than thirty years of experience in the international art market, and has founded Art Valuations as an independent art valuation company in 2015.
Until 1999 Johan worked at Christie’s in Amsterdam as Head Auctioneer where he became familiar with all aspects of an auction. He was a specialist responsible for the bi-annual sales of Old Master Paintings. And specifically for the annual sale of Dutch and Flemish Old Master Drawings. He joined Christie’s as the specialist for Old Master Paintings and Drawings, as well as for Old Master, Modern and Contemporary Prints, a field in which he has published several articles.
Before joining Christie’s in 1986 Johan worked for art dealers in The Netherlands, England and Germany.
As a specialist in art Johan is at home in a broad area of art related subjects. Johan has regularly been interviewed at Business News Radio in the Netherlands, about current art related subjects, see pers.
Johan Bosch van Rosenthal is a sworn and certified valuer and a board member at the Dutch association of valuers, brokers and auctioneers TMV, see art links and www.federatie-tmv.nl.