Silver Equinoctial Compass
Sundial by Zilveti, c. 1790/1800

Signed: "Jose Mariano Zilveti", Spain, 
plummet level for the indication of the pole height, 
horizontal scale for the declination setting, folding pin-gnomon, 
manuscript compass rose, Ø 6 in., height: 7 in.
Estimate: € 1.000/1.500
US$ 1,350/2,000
Reserve: € 350/US$ 473
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