The Vacheron Constantin dress watch with enamel by Charles Poluzzi. This watch was produced in 1960 in 18ct yellow gold and with painted-on enamel. It is a keyless dress watch accompanied by the original fitted box. Estimate is GBP6,700 to GBP13,300. A unique Patek Philippe Ref. 953 perpetual calendar tourbillon pocket watch, one of the world's most accurate mechanical precision watches from the 20th Century and multiple Observatory Prize winner, National Physical Laboratory Craftsmanship Test Record Holder of 1954 with remarkable complete daily testing records between 1934 and 1954. This timepiece is a yellow gold, keyless, ultra high-precision lever chronometer deck watch with one-minute tourbillon, Guillaume balance, special balance bridge, perpetual calendar, 24-hour indication and moon phases. Estimate is GBP200,000 to GBP333,600. The Magnificent Chinese Peony Flower Grande Sonnerie Clockwatch with Trip Repeating. Made circa 1820, it is an exceptionally rare, very large, three-train, 18ct gold, painted and champleve enamel, pearl-set, quarters first Grande Sonnerie striking clockwatch with trip quarter-repeating. Estimate GBP80,000 to GBP146,800. Audemars Piguet Royal Oak Jumbo A Series, No. 88. Produced in 1972, this example is a rare and octagonal , self-winding, water-resistant, stainless steel wristwatch with date and a stainless steel Audemars Piguet bracelet. Collectors will be interested to note that The Royal Oak A series is the earliest serial number ever to be offered at auction. Estimate GBP10,000 to GBP13,300. Audemars Piguet Royal Oak Jumbo Skeleton. This fine skeletonised watch, produced in 1991, is a rare, water-resistant, tonneau shaped, 18ct yellow gold self-winding wristwatch with 18ct yellow gold Audemars Piguet bracelet accompanied by the original warranty, instruction booklet and fitted box and an Audemars Piguet certificate of origin. Estimate GBP13,300 to GBP20,000. Audemars Piguet Grand Complication, Piece Unique No. 1/1 in 18ct white gold with diamonds. Produced as a unique piece in 1994 this extraordinary timepiece is a large minute-repeating, water-resistant, self-winding, wristwatch with co-axial round button split-seconds chorongraph, register, perpetual calendar with indication of the weeks, moon phases, and an integrated 18ct white gold and full diamond-set Audemars Piguet link bracelet. It is accompanied by an Audemars Piguet certificate of origin. Estimate GBP400,000 to GBP667,000. A Patek Philippe Ref. 715/5 watch with unique enamel miniature portrait of General Lafayette as Lieutenant General of 1791 by J. Pellarin-Leroy. The movement for this exceptional watch was made in 1962, encased in 1974 and sold on December 20, 1974. It is an extremely fine and unique 18ct yellow gold keyless dress watch accompanied by the original Patek Philippe fitted box and certificate of origin, original retailer sales receipt of January 31, 1975, Patek Philippe valuation correspondence from 1979-2001 and the extract from the archives. Estimate GBP33,400 to GBP53,400. A Patek Philippe Ref. 2526 with an exceptional original condition black luminous dial, retailed by Serpico Y Laino, Caracas. Made in 1954, this example is a very fine and extremely rare, self-winding, water-resistant, 18ct yellow gold wristwatch accompanied by the extract from the archives. Estimate GBP40,000 to GBP60,000. A Patek Philippe Ref. 2523 Heures Universelles World Time with guilloche gold center, made in 1953. Offered at auction for the first time and from the property of the family of the original owner, this is an extremely rare, World Time, 18ct yellow gold gentlemans wristwatch with two crowns and guilloche dial. It is accompanied by the extract from the archives and a Patek Philippe overhaul dated May 2011. Estimate GBP333,500 to GBP467,000.