Anamorphic picture, early 18th century, with cone mirror, wooden cover and two anamorphic pictures 1745-1753
Cylindrical mirror (100mm high) with stand, top and 3 additional mirrors, plus 42 assorted pictures for viewing in the mirror, (anamorphoscope), by the London Stereoscopic and Photographic Company, England, c. 1870 Anamorphoscope, with stand, top, three extra mirrors and 42 viewing images 1865-1875