RolexTru-Beat, Reference 6556A stainless steel wristwatch with dead beat seconds and bracelet, Circa 1956勞力士Tru-Beat 型號6556 精鋼跳秒鏈帶腕錶，約1956年製Dial: silveredCalibre: cal. 1040 automatic, 26 jewelsCase: stainless steel, screw down case backCase number: 138'592Closure: stainless steel Rolex Oyster bracelet and folding claspSize: 35 mm diameter, bracelet circumference approximately 175 mmSigned: case, dial and movementAccessories: Rolex presentation box附帶盒子品相: The movement is in working condition at the time of cataloguing. The plexi glass, crown and hands have been replaced during previous servicing. The dial is in very nice condition with very minor spotting throughout visible under a strong loupe, which is consistent with age. The red paint on the seconds hand has come off at places. The lumes on the indexes have aged evenly and reacted under UV light. The case with signs of polishing. The bezel with minor wear. The case band with minor scuff marks at places. The case back with a ding at 3 o'clock and surface scratches behind the lugs from installing the bracelet. The case numbers and reference numbers are still visible under a strong loupe. The reference 7205 bracelet with endlinks "57" is stretched and with only signs of wear. Two links at the end of the bracelet have been replaced and do not fit correctly. Please note that the movement has not been tested for the accuracy of time and may need a service at the buyer's expense. Sotheby's does not guarantee the future working of the movement and we do not guarantee the authenticity of any individual component parts since subsequent repairs and restoration work may have resulted in the replacement of original parts. You are advised that watch straps or bands made of materials derived from endangered or otherwise protected species (i.e. alligator or crocodile) are not sold with the watch and we reserve the right to remove these straps or bands prior to shipping. Furthermore, the watch may not come with its original manufacturers strap or band. Prospective bidders should review the Conditions of Business, Authenticity Guarantee, the Guide for Prospective Buyers, and any Important Notice in the sale catalogue. "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."拍卖专文: Rolex introduced the Tru-beat model reference 6556 as a tool watch for doctors and professionals. It is the only mechanical Rolex model to ever incorporate the 'dead-beat' seconds. This is a mechanism that advances the seconds hand only once per second.