Copy after Rubens

At Horta, in an otherwise interesting auction on 11 May 2015 which I have blogged about a few times already, they also sell a "Flemish School, 17th century" painting titled "Het uitlaten van de kudde" ("Letting out the flock"?), estimated at 1,200 to 1,500 Euro.

I don't really get the supposed title: it is clearly an Assumption of the Virgin. Searching a bit reveals that it is a reversed (after engraving) and changed (made horizontal instead of vertical) poor copy after Rubens, his Assumption from the Kunstpalast. Not really worth the estimate, certainly not compared to other works with the same estimate like the "Ruisdael".