Philips' Revolving Orrery

Description:

Philips' Revolving Orrery,For finding the position of the various planets for every hour of the year, with printed star chart and revolving embossed leather sleeve with four cut-out windows for reading hours, degrees, calendar and Zodiacal calendar, two revolving brass hands at the center marked Sun and Planets, suspension loop and instructions on reverse, diam. 10 in.
Estimate $200-300