JACOB AUCH, WEIMAR | A VERY RARE GOLD DOUBLE DIALLED ASTRONOMICAL CALENDAR WATCH WITH GEOCENTRIC PLANETARIUMCIRCA 1790

• Movement: gilded full plate with going barrel, cylinder escapement, plain three-arm balance• Dials: first: white enamel, the edge with Arabic numerals for hours running twice from 1-12 in black and 1-12 in pink, four subsidiary dials for minutes, date combined with month, regulation, seconds combined with days of the week, aperture for winding, gold hands, the hour hand with an additional steel support carrying a square for rapid resetting of the calendar • second: light blue enamel geocentric planetarium dial decorated with gold stars and an outer month ring, various lines of the ecliptic zodiac marked in black, with three concentric hands of steel mounted with the earth, a gold sun and moon, the entire dial revolving once per year, the ecliptic line shown by a polished steel band attached to the engraved silver dust ring• Case: plain gold moulded bezels

Movement: running at the time of cataloguing. Calendar advancing. Dial: crack to the white dial to the edge at the bottom below the regulator sector. The second light blue dial with chip to the edge between Sept and Oct. Chip to the winding hole and next to the blued screws. Case: indentation to the band by the opening, scuffs throughout.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. All dimensions in catalogue descriptions are approximate. Condition reports may not specify mechanical replacements or imperfections to the movement, case, dial, pendulum, separate base(s) or dome. Watches in water-resistant cases have been opened to examine movements but no warranties are made that the watches are currently water-resistant. Please note that we do not guarantee the authenticity of any individual component parts, such as wheels, hands, crowns, crystals, screws, bracelets and leather bands, since subsequent repairs and restoration work may have resulted in the replacement of original parts. 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. In particular, please note it is the purchaser's responsibility to comply with any applicable import and export matters, particularly in relation to lots incorporating materials from endangered species.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."

**Please be advised that bands made of materials derived from endangered or otherwise protected species (i.e. alligator and crocodile) are not sold with the watches and are for display purposes only. We reserve the right to remove these bands prior to shipping."