Inviting Dutch woman portrait

Galerie Moderne sells on 23 February 2016 an "Anonymous, dated 1673" portrait of a woman, estimated at 1,000 to 1,500 Euro.

It caught my eye because of the rather inviting pose of the woman: while the painting is at first glance a static, typical modest portrait of a somewhat Puritan or Calvinistic Dutch 17th century woman in the typical luxury clothing of the period, it changes when you notice the way she actively opens the lower part of her dress to reveal the embroidered red undergarments (sounds like lingerie, but is still well-dressed).

I don't know how to read this, whether this was considered perfectly normal and acceptable or whether this is way more suggestive and gives a glimpse of less strict morals and subjects. I wasn't aware of other comparable paintings in this genre, but searching further revealed other somewhat similar examples.

One painter who employed this was Isaac Luttichuys, who died early in 1673 and so probably isn't responsible for this work (the quality of his work was usually better as well, the work for sale is very good on a small scale but falls a bit flat when seen from up close). The above example (sold at Sotheby's in 2004) has less striking underdress, but the pose, with the hand actively opening the upper dress, is comparable.

Particularly close is the self-portrait from 1661 by Gesina Ter Borch, daughter of Gerard Ter Borch (from the Rijksmuseum).

The style of the painting for sale is comparable to the few woks by Steven van Duyven, like the above from 1680 (from the RKD). But it will most likely remain an anonymous Dutch work. Still, the unusual pose makes it more interesting than most of these, and it is easily good enough to surpass the highest estimate here.

UPDATE: sold for 1,100 Euro, not as much as I thought it would do.

UPDATE 2: again for sale at Tradart Deauville on 9 October 2016 as Spanish School, estimated at 1,000 to 1,500 Euro.