A decorative Indo-Persian brass astrolabe, the throne decorated with Birds of Paridise and scrolling foliage, with signature, with loop and suspension ring, the mater engraved on the inside with the star of David foliate decoration and inscriptions, the back incised with various characters, a trigonometric quadrant and other information, with five plates and pierced rete with various stars, many labelled with alidade, pin and wedge - 6in.diameter