• cal. 30CH manual winding lever movement, 18 jewels • silvered dial, painted Arabic numerals, blued steel hands, outer tachometer and telemeter scales, engine-turned subsidiary dials for constant seconds and 30-minute register • stainless steel case, screw-down back • case, dial and movement signed

The movement is running at time of cataloguing, however it was not tested for the accuracy of time or duration of the power reserve and may need service at the buyer's discretion. Please note that Sotheby's does not guarantee the future working of the movement. Case in overall good vintage condition with surface wear and scuffing consistent with age and use. Dial in good vintage condition with a light and even patina overall. Movement in excellent condition.
"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."

Production of cal. 30CH was introduced by Longines in 1947, replacing the world's first flyback chronograph, the cal. 13ZN. The flyback feature made chronograph-resetting easier for pilots, allowing wearers to press one button and revert the dial to zero in an instant. Cal. 30CH was designed to be sportier, and this movement was often found in stainless steel, waterproof cases with button pushers. 

The present lot is a well▨ preserved, original example of a Long🐲ines chronograph containing the famed 30CH flyback movement within a large stainless steel case with screw down back.

The owner was a career pilot who was given the chronograph upon his receipt of his pilot’s license by his uncle, who was an employee at Longines. Offered 𓃲for the🗹 first time from the original owner, this Longines 30CH presents a fantastic opportunity for any collector of pieces with interesting provenance.

Accompanied by an Extract from the Archives confirming that the watch was purchased by the company Longines-Wittnauer on September 8th, 1966.