A total of only 281 examples were produced in total. The model was later replaced by the reference 2499, and has inspired the design for subsequent perpetual calendar chronographs.
As the first perpetual chronograph to be made in series by any maker, the reference 1518 quickly attracted the attention of royalty and the privileged, including King Farouk of Egypt, the King of Jordan, and of course Henry Graves, Jr., arguably the greatest watch collector of the 20th century. Interesting, approximately half of all reference 1518s were sold to America during its short production run and watches, and examples such as the presently offered watch, were bought by Americans who wanted to buy the best that money could buy.
The 1518 was a design first, setting the template for all of its ‘descendants’ with its basic layout — apertures at 12, two subsidiary dials at 9 and 3, and a moonphase at 6.
Its square push buttons, attractive mid-century aesthetic, and beautiful raised enamel dial tachymeter make this watch the timepiece of choice for experienced collectors today.
The reference 1518 is now a treasured and collectible timepiece, seen by many Patek Philippe connoisseurs as the crown jewel of their collection.
Examples of reference 1518 are illustrated in Patek Philippe Wristwatches by M. Huber & A. Banbery, 1998, plate 386, page 231.
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Condition report
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The condition of lots can vary widely and the nature of the lots sold means that they are unlikely to be in a perfect condition. Lots are sold in the condition they are in at the time of sale.
Movement: The movement is in working order at the time of cataloguing, consistent with the age of the watch. The movement has not been tested for accuracy. The quick-correction pusher for the moon phase jumps back to its original position only very slowly after being activated. A service is recommended. Dial: The dial has small stains, marks and scratches throughout. Slightly larger spots can be seen on the tachymeter at the numbers 70, 100 and 120, as well as a paint chip on the outer ring above the number 60. The minute ring has smaller spots between the numbers 25 and 20, as well as between the numbers 50 and 55. The minute subdial has slightly larger spots above the number 30 and below the number 15. A small spot is visible on the number 17 of the date. A small paint chip is visible to the right of the word "Genève". Presumably the calendar numerals have been reprinted later, the dial has been restored.The hands show slight signs of oxidation and minor scratches. Case: With minor surface scratches throughout. Hallmark to the band slightly rubbed. Buckle: With slight surface scratches. Overall condition: In generally good overall condition, all consistent with age.