An early 19th Century French Empire celestial planisphere, with black card cut out to reveal a revolving hand-coloured engraved paper plate, with constellations, and month chart revealing six month intervals, with overlaid hour scale and cardinal points, in glass-fronted mahogany cabinet with brass corner bosses and mounted on four paw feet, the rear with sliding panel to ivory turning handle - 10¼in. (26cm.) high