A Jovilabe half-size Grand Orrery, made by George Gyori, mounted on an ebonised wooden base with a circular brass plate engraved with signs of the Zodiac, months of the year and the four seasons, the central stepped and turned brass column surmounted by a brass sun, the geared arms supporting the planets and moons of earth's solar system, hand crank mechanism, 36 cm high, 29 cm diameter, length of the arm 34 cm