An unknown Christian van Donck

Bertolami sells on 17 December 2015 a "Dutch master, mid 17th century" Saint Jerome in his study, estimated at 3,000 to 3,500 Euro.

It isn't the usual Jerome known from Marinus van Reymerswael and other similar Durer-inspired masters, but a composition for which I found only one other example. It was attributed to Van Reymerswael when it was sold at Bernaerts from Antwerp in 2010, but has been changed to "attributed to Christian van Donck" since, as can be seen at RKD.

Comparing the two works, it looks as if the figure is better in the RKD version, while the attributes are better in the work for sale. Comparing with the very few other Van Donck paintings one can find on auction sites or the RKD shows that the composition and individual elements are very similar, but that the overall quality is somewhat less, even though it is still a good painting. Looking at what the other Van Doncks have fetched, I would estimate this one at some 15,000 Euro.

UPDATE: sold for 5,500 Euro, almost double the estimate but probably still a bargain.