Kendzia, from Hamburg, Germany, sells on 24 March 2017 a "Circle of Jan Brueghel II" Allegorical Scene, estimated at 9,000 Euro.
RKD, shown topmost, work for sale below it for easy comparison). It was for sale at Koller in 2008 (80,000 Swiss Francs) and 2009 (60,000 Swiss Francs), but both times remained unsold. The work for sale now is in worse condition, but even so it looks to me like a less well executed work, especially the central female figure (Venus? A well-clothed Venus in that case). It is not a real copy, enough details are different, but it obviously is the same composition.
The estimate seems a bit too high taking these things into consideration, but it still is an attractive work which is in dire need of cleanup and perhaps restoration (and if you are really lucky, it has been partially overpainted and you find an original Kessel / Casteels anyway!)