The strap size depends on the reference. Yours is engraved on the case back or between the lugs at 6 o'clock.
20 or 21 mm
Verification: From our database, not yet verified
38 to 42 mm cases · 2013 to 2017
Indicative information. Check your watch before buying a strap: whatsmylugwidth.com is not responsible for an incorrect size.
The story · Since 1923
750
Ref. 1463 examples believed produced in some 25 years, less than 10 percent in steel
Worn by
Patek's first wrist chronograph, made on special order in 1923, was already a split-seconds model built from a small pocket watch movement blank. From around 1927 the workshops made wrist chronographs as regular production, in round, square, rectangular, tonneau and cushion cases. Those without split-seconds were monopushers, with start, stop and reset worked through the crown.
Jean and Charles Stern bought Patek Philippe in 1932 and judged that chronographs had a bright future. Ref. 130, with pushers at 2 and 4 o'clock, became the archetype of the house's wrist chronographs; a larger 36.5mm Ref. 530 followed in 1937. From 1939 a reworked Valjoux 23VZ calibre powered these watches for about twenty-five years.
The gentleman racing driver took delivery in 1932 of a 46mm Patek chronograph, an early example of the house making oversized chronographs for the cockpit.
Patek Philippe bought the yellow gold, black dial Ref. 2512 split-seconds chronograph at Christie's in 2000 for a hammer price of CHF 1,439,750 and placed it in its museum. That 46mm watch is the model behind the 1998 Ref. 5070.
A pink gold Ref. 1463 from 1950 with a two-tone dial, retailed by Serpico y Laino of Caracas, sold for $600,000, the record for any watch sold in a Christie's online sale (the release gives sale dates of November 24 to December 10).
A Ref. 1463 retailed by Serpico y Laino with a pink dial in a pink gold case realised $565,150 after ten minutes of bidding at The New York Watch Auction: NINE.
A steel 1463 made in 1950 and offered for the first time by the original owner's family sold for USD 336,500 against an estimate of USD 150,000 to 250,000 in December 2017.
1/10th second monopusher chronograph: the CH 29-535 PS 1/10 runs at 36,000 semi-oscillations per hour and drives a red tenths hand that turns once every 12 seconds. Platinum case based on the 5370, with a diamond at 6 o'clock.
41mm by 13.68mm, on a navy calfskin strap embossed with a fabric pattern and a platinum fold-over clasp.
A ladies' manual chronograph on the CH 29-535 PS, with a diamond bezel, faceted lugs recalling the Ref. 1579 and pushers echoing the 1463. Phillips calls it the only Patek chronograph aimed mainly at women.
38mm case on a crocodile strap with pink gold pin buckle; Delugs lists 20mm lugs.
Lemania 2310-based CH 27-70 at 18,000 vph in a stepped-bezel case, first in yellow gold with a black dial, later in white gold, rose gold and platinum. Its tachymeter and railway seconds track fill the space a 27mm movement leaves in a large case.
42mm case, 6mm larger than the 36mm 3970; Delugs lists 21mm lugs for the 5070J-001.
Waterproof case with a ten-sided screw back and round pushers, powered by the 13''' calibre. Steel examples are ultra rare; Phillips counts 67 known in steel.
Auction examples measure 34.5mm to 35mm and are catalogued on leather straps with Patek buckles.
Patek Philippe Chronograph references in our database. Each card says where its width comes from: listed by the maker (linked to the maker's page in the details), two independent sources agree, or listed in our database and not yet verified by us.
Chronograph 5170G Blue
Lug width: 21 mm
Source: DatabaseCase size: 39 mmYear: 2013Blue dialCase material: White Gold
Chronograph 5170G White
Lug width: 21 mm
Source: DatabaseCase size: 39 mmYear: 2013White dialCase material: White Gold
Chronograph 5170R Black
Lug width: 21 mm
Source: DatabaseCase size: 39 mmYear: 2016Black dialCase material: Rose Gold
Chronograph 5170P Blue
Lug width: 21 mm
Source: DatabaseCase size: 39 mmYear: 2017Blue dialCase material: Platinum
Chronograph
Lug width: 15 mm
Source: DatabaseWhite dial
Chronograph
Lug width: 20 mm
Source: DatabaseCase size: 38.6 mmMulti dialCase material: White Gold
Chronograph
Lug width: 21 mm
Source: DatabaseCase size: 39.5 mmMulti dialCase material: Rose Gold
Chronograph
Lug width: 20 mm
Source: DatabaseCase size: 39 mmGrey dialCase material: White Gold
Chronograph
Lug width: 21 mm
Source: DatabaseCase size: 40.5 mmSilver dialCase material: Stainless Steel
Chronograph 7150 Rose Gold / Silver (White Dial)
Lug width: 20 mm
Source: DatabaseCase size: 38 mmSilver dialCase material: Rose Gold
Chronograph As12520
Lug width: 21 mm
Source: DatabaseCase size: 42 mmBlack dialCase material: Yellow Gold
Chronograph As12521
Lug width: 21 mm
Source: DatabaseCase size: 42 mmSilver dial
Chronograph Multi-Scale Chronograph 5975 Platinum / 175th Anniversary (Black Dial)
Lug width: 20 mm
Source: DatabaseCase size: 40 mmBlack dialCase material: Platinum
No reference matches.
Patek Philippe Chronograph references use 15 mm or 20 mm or 21 mm depending on the reference and case size, so check yours in the list below. The most common is 21 mm (8 of 13 references with a known width). These widths come from our database and are not yet verified.
No. 3 different lug widths appear across the line, often by case size or generation. Check the reference engraved on the case back or between the lugs.
21mm. Europa Star measured 21 mm between the horns on the launch 5170J, and Delugs lists 21mm for the 5170P.
20mm. Patek's own technical data give a width between lugs of 20 mm on the 40mm case.
The gap between the two lugs that hold the strap, in millimetres. A new strap must match it exactly: 20 mm lugs take a 20 mm strap.
Most watches use spring bars, so any strap of the right width fits. Many smartwatches use their own band system instead, such as Apple Watch bands or Garmin QuickFit.