A second elegant Iranian astrolabe in the style of the celebrated instrument-maker of late-17th-century Isfahan, 'Abd al-A'imma

overall in good condition, 5 plates, areas of abrasion, pitting and patination particularly to exterior and one of the plates, horse and pin replaced, as viewed
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

Again, whilst this little astrolabe is unsigned, the quality and style of its execution and engraving suggest that it might have been made by 'Abd al-A'imma, the most prolific of the instrument makers of Isfahan in the late 17th century. This is certainly not one of the deliberate fakes that bear his name, but the back of this instrument has been severely turned and there are circular markings on the back as well as on the back of the throne. The metal underneath appears to be black. No explanation can be provided at present.

The features of this instrument are very similar to those of the previous lot. On this piece, the celebrated "Throne Verse" from the Qur'ân is engraved in a cartouche on the front of the throne, which otherwise bears no decoration on either side. The latitudes served by the plates are 27°, 30°, 31°, 32°, 33°, 34°, 36° and 38° and 40°, and there is also a plate of horizons. The back bears the standard trigonometric quadrant, a solar quadrant and shadow scales.

Bibliography: Mayer, Islamic Astrolabists, s. v.