PATEK PHILIPPE | STAINLESS STEEL AND ALUMINIUM ELETRONIC MASTER CLOCK SYSTEM WITH DIGITAL DISPLAY SLAVE CLOCKMODEL MB24RS NO 710122 CIRCA 1970

Movement: quartz oscillator Case: stainless steel and aluminiumDiameter: master clock measuring 23.5 cm length x 42.5 mm width x 13 mm height, slave clock measuring 11.5 cm length x 44.5 mm width x 12..5 mm heightSigned: case, dial and movement

The clocks are in working condition at the time of cataloguing.
"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."

Following the dawn of atomic age in 1960s, electronics and quartz were introduced to the field of horology. Patek Philippe started developing and producing master timing systems which operates by electricity during early 60s. The timing system of these modules was designed to be constantly regulated by radio signals from the atomic clocks in the Parangins Obeservatory in Geneva. The master system usually consists of a highly accurate master clock with a number of slave clocks and were used in airports, train stations and office buildings and aided greatly with showing time in different locations.