Repaired by Jan Peres of Haarlem (Netherlands) in 1793. Operated by clockwork or hand crank. This Grand Orrery (M-392) consists of multiple parts, some located on 19/4.
Material
"door Pieter Ysenbroek is dit Planetrium Uitgevonden, den 5 octobr: 1737; en, door den zelve Volmaakt, primo Zeptembr: 1738". In a different hand "En Verbeetert Door Jan Peres te Haarlem 1793". Moveable horizon arc labelled "BEWEEGLKE HORIZONT".
