Unknown Flemish Virgin and Child composition, ca. 1550 at Vanderkindere

Vanderkindere, from Brussels, sells on 21 June 2016 a "Circle of Frans Floris I" Virgin and Child, estimated at 3,000 to 4,000 Euro.

A reader pointed out the striking resemblance to a work for sale (but unsold) last year at Alcala, in Spain;  described as "Circle of Jan Gossaert, Antwerp, ca. 1530)" and somewhat bigger than the one for sale here (100 by 75 cm vs. 75 by 63 cm): it had a starting price of 50,000 Euro, which turned out to be too steep.

The weird thing is that I can find no other examples of this composition before these two ones, which come fairly close to one another. Still, both look authentic to me (and the auction houses), so no need to immediately suspect fakes.

The Alcala is the better painting, but that doesn't answer the questions of origin, date, artist... Probably Antwerp, ca. 1530-1550, but beyond that? I have looked at hundreds of Virgin and Childs, paintings and engravings, and one can see similarities with the works of Bartholomeus Spranger, even Jacques Caillot, but these are coincidences and common image language, not any indication of who painted this. 

So, an Antwerp School Virgin and Child, with one other equally anonymous example known; a composition that is unique to those two (nothing remotely similar could be found), but they aren't copies of each other (at most, the Vanderkindere may be a copy of the Alcala, but with enough differences, and by a different hand). Even so, the Vanderkindere one should fetch 10,000 Euro probably as a high quality early 16th century Flemish painting which is unusual but decorative, more so than many of the more traditional Virgin and Child depictions.

UPDATE: sold for 3,000 Euro.

UPDATE 2: now (on 6 August 2016) for sale at Accademia Fine Art in Monaco as "Circle of Maarten van Heemskerck" with an estimate of  4,500 to 6,500 Euro. No idea if Heemskerck is any closer than other contemporary names, it certainly isn't too farfetched, and like I said I believe it to be worth more than the 3,000 Euro it fetched initially. We'll see!