quattro[Moderator]
18499
Patek Philippe's retrograde perpetual calendars
Note that this thread includes only the "simple" retrograde perpetual calendars, meaning those with no other complications.
Therefore, the references with a minute repeater and a tourbillon (5013, 5016, 5213, 5216, 5217, 5316) are deliberately lefts aside.
Enjoy!
A/ REFERENCES WITH A NON-OFFICER CASE
1/ Ref. 96 with 11-ligne movement made from a Victorin Piguet ébauche (unique piece from 1937)

credit: Patek Philippe magazine
2/ Ref. 5050 with a 35.5mm case and caliber 315 S QR (3Hz, 48h pr) or 324 S QR (4Hz, 45h pr) introduced in 1993 and in production until 2002
As far as I've understood (but available information is so unclear and confusing), there were three series of this reference:
- 1st series: Roman numerals, absence of "Automatic" on the semi-circular moon phase & cal. 315 (some models were made later with the same characteristics but Breguet numerals)
- 2nd series: applied baton indexes, presence of "Automatic on a full circle moon phase & cal. 315
- 3rd series: same as 2nd series but with cal. 324
a/ Yellow gold (ref. 5050J - exact ref. number isn't always available)

credit: analog shift
Ref. 5050J-023 
credit: European watch company
Ref. 5050J-024 
credit: sotheby's
Ref. 5050J-025 
credit: sotheby’s
Ref. 5050J-026 (Michael S. Ovitz piece unique with sunburst ardoise-grey dial, suspended applied yellow gold Breguet numerals and skeleton luminescent hands and dots)

credit: antiquorum
Ref. 5050J-010 or -019 ? 
credit: amsterdam vintage watches
b/ Rose gold
5050R-001

credit: European watch company
2nd series, no precise ref. number found 
credit: rostovsky watches
c/ White gold
5050G-001 
credit: tourneau
2nd or 3rd series, no specific ref. number found 
credit: a collected man
Model with salmon dial, no specific ref. number found 
credit: omega forums
d/ Platinum (no specific ref. number found for both 1st and 2nd series)

credit: European watch company
3/ Ref. 5496 with 39.5mm case and caliber 324 S QR introduced in 2011 and produced until 2020
a/ Platinum
Ref. 5496P-001

credit: watch club
Ref. 5496P-014

Ref. 5496P-015
credit: monochrome
Ref. 5496P-011 (probably unique piece with Breguet numerals and blue dial)

credit: phillips
b/ Rose gold, ref. 5496R-001

credit: watch club
4/ Ref. 6159G-001 with a 39,5 x 11,49 mm case and caliber 26-330 S QR introduced in 2025



credit: hodinkee
B/ REFERENCES WITH AN OFFICER CASE
1/ Ref. 5059 with a 36 x 13.3mm case and caliber 315 S QR introduced in 1997
a/ Yellow gold
Ref. 5059J-001

credit: loupe this
Ref. 5059J-018 "Michael Ovitz" unique piece

credit: pinterest
b/ Rose gold
Ref. 5059R-001

credit: watch collectors
Ref. 5059R-017 London Saatchi Edition

credit: phillips
Ref. 5059R-018

credit: phillips
c/ White gold
Ref. 5059G-001 
credit: the watch lounge
Ref. 5059G-018 
credit: christie's
d/ Platinum
Ref. 5059P-001

credit: analog shift
Ref. 5059P-018

credit: christie’s
2/ Ref. 5159 with 38 x 11,81mm case and caliber 324 S QR
a/ Yellow gold, ref. 5159J-001

credit: classic driver
b/ Rose gold, ref. 5159R-001

credit: bonhams
c/ White gold
Ref. 5159G-001

credit: the keystone
Ref. 5159G-012 London Edition (Breguet numerals)

credit: watch guru
3/ Ref. 5160 with 38 x 11.81mm case and caliber 324 S QR (this ref. is a variation of the 5159 with an intricately hand-engraved case and clasp)
Ref. 5160R-001 (2013)

credit: x
Ref. 5160/500G-001 (Breguet numerals, 2016)

credit: frodos
Ref. 5160/500R-001 (Breguet numerals, 2024)

credit: horobox