Heuer

• cal. 230 manual winding lever movement, 17 jewels, mono-metallic balance • black matte dial, luminous Arabic numerals, subsidiary dials for constant seconds and 30-minute register, outer minute track • stainless steel micro sand blasted case, bi-directional revolving black bezel calibrated for 60 units, pushers to the band at 2 and 4 for chronograph operation, back secured by 4 screws, back engraved • dial signed • with a black leather military cuff with German Military assignation 6645-12-145-6415

Movement is running at the time of cataloguing. Please note that the movement has not been checked for timekeeping accuracy and Sotheby's will not be held responsible for any repairs should they be required. Dial and hands in good condition, have been relumed. Case with minor scuffs and scratches to case back, some loss of material to the outermost edge of the bezel.
"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."

The present lot is distinguished from other similar models by the red encircled 3H designation on the dial, which indicates the presence of tritium.  As a radioactive isotope of hydrogen ³H or hydrogen-3 are alternative chemical names for tritium.

This lot also comes with a military assigned leather cuff.  These types of watch straps, identified by stitched leather that sits beneath the watch, were originally intended to prevent pilots' wrists from being irritated or possibly injured by the potentially significant temperature changes of the metal case back.