Concord

both: • quartz movement by ETA • two-tone 18k gold dial with recessed circular center, single baton index at 12 o'clock • 18k gold ultra-thin rectangular case, downturned lugs, the back secured by four 18k gold screws • dial signed, cases numbered

The batteries of both watches are currently not running and will require replacement. The dials of both watches are scuffed throughout, more noticeable on the larger one. The cases of both watches bear scuffs from wear. The strap of this wristwatch is made from an endangered species; please refer to Important Notices for further information.
"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.

Important Notice regarding importation into the United States of Rolex watches
Sotheby's cannot arrange for the delivery of Rolex watches to the United States because U.S. laws restricts the import of Rolex watches. The buyer or a designated agent may collect the property in the country of sale."

Accompanied by a Concord Certificate of Authenticity dated October 31, 1979, a One-Year Warranty, Instruction Manual, and presentation box and outer packaging fitted for the larger of the two watches. Together with facsimile of 'The Battle to Build the Thinnest Watch,' printed in the New York Times, February 29, 1979.

The Delirium 1 was the thinnest watch in the world at the time of its release, bearing the smallest motor every produced. This extraordinary feat was the result of a decisive moment in the history of watchmaking: the advent of the quartz movement. With this new technology came competition from Japan in the form of Seiko and Citizen watches. Switzerland, which had long been the uncontested capital of the watch-making world, took a significant hit from the quartz movement, which was at the time advertised for its unparalleled accuracy and expected to entirely replace manual movements. The Delirium 1 was a direct response to Seiko's limited edition of 7 pieces measuring 2.5mm in thickness: by creating a watch 0.7 millimeters thinner than the one created by Seiko, Concord successfully re-asserted Swiss dominance in watchmaking.