quattro[Moderator]
19180
Audemars Piguet's Wandering Hours
Here are all the models I could find. I hope I didn't miss too many.
Have a nice week-end!
1/ Ref. 25720 with caliber 2124
a. Guilloché dials

Platinum (credit: hairspring)

Yellow gold (credit: adm horloger)

Rose gold (credit: watchesofknightsbridge)

Platinum (credit: collector square)


Platinum (credit: a collected man)
b. Engraved dials 
Rose gold (credit: Amsterdam vintage watches)

Yellow gold (credit: s.song)

Platinum (credit: the keystone)
c. Tiger's eye dial 
Rose gold & steel Millenary (credit: a collected man)
2/ Millenary Starwheel ref. 25898 with caliber 2224

Rose gold (credit: everywatch)
Yellow gold (credit: ineichen auctioneers)
Steel (credit: the keystone)
3/ John Shaeffer Minute Repeaters ref. 25797 & 25881 with caliber 2867 (NB: given the confusing information available online, I haven't been able to tell one reference apart from the other)

Yellow gold (credit: hodinkee)


Platinum (credit: phillips)


Titanium (credit: analog shift)

Yellow gold (credit: markkauzlarich on IG)
Code 11.59 Starwheel with caliber 2950 

White gold & black ceramic (credit: monochrome)

Rose gold & black ceramic (credit: Hodinkee)