Cabinet card-sized monograph in varnished wood
 Size 13 x 20 x 4 cm.
 Sold without a card.
 The first graphoscopes appeared in the mid-19th century. They were used to improve the viewing of photographs on paper. They were equipped with a magnifying lens. The model offered here is quite rare due to its size and decoration. Indeed, its use was specifically reserved for viewing business cards, a format introduced by Disderi in the 1850s.