Black and gilded ebonite frame, wood and plaster 19th century

Frame in wood, ebonite and plaster, circa 1860. The image in the center could be exchanged by a mirror for example. The frame is composed of a structure of wood and plaster, the cardboard bottom with a glass pane; the black and golden ebonite façade. Ebonite - ebonite - ebony color - was discovered by Charles Goodyear in 1839 (vulcanization of natural rubber), was a precursor of synthetic and preceded Bakelite. The photograph of the ancestor is offered: Authentic Circa 1870 photograph signed by Pierre Florian, The label on the back of the portrait reads: "PHOTOGRAPHIE PIERRE FLORIAN, 11, rue Dauphine, BORDEAUX SPECIALTY OF LARGE UNALTERABLE PORTRAITS, Advanced installations, Reproduction and enlargement of old Portraits by special devices, ARTISTIC EXECUTION, BROMOTYPY, PHOTO-PAINTING, photographs of all kinds and sizes". Dimensions: Portrait and frame included: Height: 70.5 cm / width: 60.5 cm / depth: 4 cm Weight: about 5 kg (excluding packaging)