Patek Philippe Grand Complications

Most Patek Philippe Grand Complications references take a 20 mm watch strap: 94 of 240. The lug width follows the case size: 36 mm case → 19 mm, 37 mm case → 20 mm, 40 mm case → 20 mm and 41 mm case → 21 mm.

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Patek Philippe Grand Complications lug width by case size

240 references measured; 9 more have an integrated bracelet. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
30 mm	20 mm	1	—	5101P-001
33 mm	16 mm · 20 mm on 1	5	—	5959P-001, 5959P-011, 5959R-001
34 mm	18 mm · 20 mm on 3 · 19 mm on 1	7	—	7000/50G-011, 7000/50R-010, 7000R-001
35 mm	19 mm · 16 mm on 1 · 17 mm on 1 · 18 mm on 1	5	—	1518A, 1518J
36 mm	19 mm · 20 mm on 5 · 18 mm on 3 · 21 mm on 1	22	—	3970EG-016, 3970EG-022, 3970EJ-001
37 mm	20 mm · 21 mm on 13 · 19 mm on 12 · 18 mm on 7	56	—	3979J/001, 5004A-001, 5004G-015
38 mm	20 mm · 18 mm on 2 · 19 mm on 2 · 21 mm on 2	19	—	2449R Series 2, 2499J Series 4, 5078G-001
39 mm	19 mm · 18 mm on 1 · 20 mm on 1 · 21 mm on 1	5	—	5327G-001, 5327R-001
40 mm	20 mm · 21 mm on 22 · 19 mm on 5 · 18 mm on 1	53	—	5016A-010, 5016J Grey, 5016J-011
41 mm	21 mm · 20 mm on 8 · 22 mm on 2 · 18 mm on 1 · 19 mm on 1	35	—	1938P-001, 5207G-001, 5236P-001
42 mm	20 mm · 21 mm on 4 · 22 mm on 2 · 18 mm on 1 · 19 mm on 1	13	—	5303R-001, 5303R-010, 5308P-010
43 mm	20 mm · 21 mm on 2 · 18 mm on 1 · 22 mm on 1	8	—	5104P-001, 5106R-001, 5304/301R-001
44 mm	16 mm · 20 mm on 1 · 21 mm on 1 · 22 mm on 1	4	—	6104R-001
45 mm	22 mm	2	—	6301A-010, 6301P-001
47 mm	20 mm	2	—	5175R-001, 6300G-010
48 mm	21 mm	1	—	6300GR-001
49 mm	18 mm · 20 mm on 1	2	—	6300/400G-001

References that take a different watch strap

3939 MOP: 20 mm, not the 16 mm of most 33 mm cases
7000/250G-010: 20 mm, not the 18 mm of most 34 mm cases
7000/50G-001: 20 mm, not the 18 mm of most 34 mm cases
7000/50G-010: 20 mm, not the 18 mm of most 34 mm cases
7000/50R-011: 19 mm, not the 18 mm of most 34 mm cases
7140G-001: 16 mm, not the 19 mm of most 35 mm cases
7140R-001: 17 mm, not the 19 mm of most 35 mm cases
7149G-001: 18 mm, not the 19 mm of most 35 mm cases
3940J-025: 18 mm, not the 19 mm of most 36 mm cases
3970EP-019: 20 mm, not the 19 mm of most 36 mm cases
3970EP-029: 18 mm, not the 19 mm of most 36 mm cases
3970EP-046: 20 mm, not the 19 mm of most 36 mm cases
3970ER-028: 20 mm, not the 19 mm of most 36 mm cases
3990P-029: 21 mm, not the 19 mm of most 36 mm cases
3990R-0X1: 20 mm, not the 19 mm of most 36 mm cases
3990R-0XX: 18 mm, not the 19 mm of most 36 mm cases
7040/250G-001: 20 mm, not the 19 mm of most 36 mm cases
3448J: 18 mm, not the 20 mm of most 37 mm cases
3448J Howes: 18 mm, not the 20 mm of most 37 mm cases
5004G_Salmon: 19 mm, not the 20 mm of most 37 mm cases
5004G-001: 19 mm, not the 20 mm of most 37 mm cases
5004G-013: 19 mm, not the 20 mm of most 37 mm cases
5004J-012: 19 mm, not the 20 mm of most 37 mm cases
5004P_Roman: 21 mm, not the 20 mm of most 37 mm cases

And 90 more in the full list below.

Questions about the Patek Philippe Grand Complications

Do all Patek Philippe Grand Complications case sizes take the same watch strap?

No. The lug width changes with the case size: the 36 mm case takes 19 mm, the 37 mm case takes 20 mm, the 38 mm case takes 20 mm, the 40 mm case takes 20 mm and the 41 mm case takes 21 mm. Check your case diameter before you buy.

Can two Patek Philippe Grand Complications watches with a 37 mm case take different watch straps?

Yes. Of the 56 Patek Philippe Grand Complications references with a 37 mm case, 24 take 20 mm, 13 take 21 mm and 12 take 19 mm. The reference number decides, not the case size alone.