"Flemish School" is by Hans Rottenhammer

Thiollet, from France, sells on 10 October 2017 a "Flemish School" Dancing putti, a small oil on copper (29 by 36 cm) estimated at 2000 to 3000 Euro.

The work is probably by Hans Rottenhammer, after a Jan Brueghel composition.

The Brueghel is from the Alte Pinakothek, and dates to ca. 1605.

Another versions by Rottenhammer can be found in the Museum of La Valletta, in Malta.

A nearly identical, though perhaps somewhat better painted version was sold at Christie's in 2009 for £31,000, indicating that the one for sale now is probably seriously undervalued and should fetch 10,000 Euro instead, although it needs some cleaning or restoration.(larger image found through RKD).

UPDATE: now for sale at Jean Moust for 7,000€ as by Rottenhammer, seems a very reasonable price.

Venus and Amor: De Quade de Ravesteyn or Rottenhammer

For sale at Ventes SARL May in Roubaix, 16 March 2015: a "Venus and Amor", attributed to the
Prague School, environment of Dirck De Quade van Ravesteyn (1565-1620). Estimated at 6,000 to 8,000 Euro, it seems to be a good picture, but the only picture I found is much too small to judge it correctly.

The topic has been painted multiple times by Ravesteyn, e.g. this one sold at Christie's in October 2014 for 9,375 Euro. While there are obvious similarities, from the overall composition to the position of the legs of the Venus, the differences are too big to situate this around the same artist (and the one for sale seems to be a better picture as well).

To me, it seems much more likely that the work comes from the environment of Hans Rottenhammer (1564-1625), active at the same time and places as Ravesteyn. There is e.g. the above by Rottenhammer from Christie's in 2010, sold for £58,000.

This one is more closely comparable to the one for sale now. These two make it clear that the painting for sale is not by Rottenhammer himself, but the figures are closer to him than to Ravesteyn in my opinion

For what it's worth, all these seem to go back to a Venus and Amor by Quentin Massys, vastly superior to any of these. And of course the Venus paintings by Titian, like the one below. The Massys is earlier than the Titian though!