[Peepshow viewing box and 10 peepshows].ca. 1750?]zxxTitle supplied by cataloger.An optical box (or boîte d'optique) for viewing peepshows; accompanied by 10 peepshows displaying a variety of scenes.Peepshows possibly engraved and printed by Martin Engelbrecht of Augsburg.To use the box, the viewer looked through the magnifying lens and saw, reflected in a mirror placed at a 45-degree angle, a three-dimensional scene formed from a series of six layered images.Each of the 10 accompanying peepshow sets contains six views; all of the views are printed on stiff paper, are hand colored and have been cut out except for the sixth which forms the background and has the number 6 printed at the bottom. In some cases view 5 also has the number printed at the bottom.Each peepshow is housed in an individual packet of paper with a manuscript title in Dutch; the packets have been hand numbered nos. 1-9 and no. 11 and, on the verso of each view, the set number and the view number have been added in ms.Within the background view of set no. 6, the letter H is printed in the lower left corner.