Perspective box of black lacquered wood with three painted glass plates: whaling between icebergs, perspective case glass plate glass wood oak wood brass, handpainted Perspective cupboard made of black lacquered oak (circa 1875-1900). raised edge at the top of the back. Metal wackets on both sides; on one side brass knob to pull the box out of the storage chest. In the closet at equal distances from each other three painted glass plates (circa 1775-1810): foreground center and background creating three-dimensional effect On the right side with white paint: 9 optics perspective glass painting diafanorama Dutch flag