Perspective box of black lacquered wood with three painted glass plates: river view with sailing ships, perspective case glass plate glass wood oak wood brass, handpainted Perspective cupboard made of black lacquered oak (circa 1875-1900). On both sides metal hooks on one side brass knob to pull the box out of the storage box. In the closet at equal distances from each other three painted glass plates (circa 1775-1810): foreground center and background giving rise to three-dimensional effect optics perspective glass painting diafanorama.