Introduced in 2016, Patek Philippe's Perpetual Calendar ref. 5327 has a 39 x 9,71 mm case and is powered by micro rotor caliber 240 Q.
Leaf hands, Breguet numerals, scalloped lugs... many elements should make it popular and sought after, but it doesn't seem to get all the love it could (should?) get.
I myself haven't been particularly attracted to it and, looking at the photos, I wonder why...
Best to you all,
Emmanuel
1/ YELLOW GOLD, Ref. 5327J-001 with ivory lacquered dial and recessed counters (discontinued in 2020, whereas the rose and white gold variants are still part of the current catalogue)

credit: @thewatchdude (1-2), analog shift (3-4), @powerofpatek (5) & @mrandmrsparticular (6)
2/ ROSE GOLD, Ref. 5327R-001 with ivory lacquered dial and recessed counters


credit: @leguidedesmontres (1), @huangshg (2), hodinkee (3-5) & @italianwatchspotter (6-7)
3/ WHITE GOLD, Ref. 5327G-001 with blue sunburst dial and recessed counters



credit: 41watch (1), @cyril_41watch (2), @watchoo_talkin_bout (3), cdn.watchcharts (4) & christie's (5)
YELLOW, WHITE & ROSE GOLD 
credit: haute time