Blackman Cruz 21 April 2015 Blackman Cruz 221 221 John Emerson Scott mechanical orrery mechanical orrery USA, c. 1925wood, aluminum 13 h × 14¾ w × 16¼ d in (33 × 37 × 41 cm) estimate: $2,500–3,500 own a similar item? free evaluation This model of the solar system demonstrates the earth's seasonal changes. print
