Patek Philippe 5073 Caliber R 27 Q, Manual

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Introduction
This wristwatch unites two complications
consummately mastered by Patek Philippe: a
perpetual calendar and a minute repeater. The
self-winding movement with a strike train
embodies all functions of a full calendar as well
as a moon-phase display. The Ref. 5073 stands
out with remarkable sonority. Patek Philippe
devoted considerable resources to metallurgical
and acoustic research with the aim of crafting
gongs that produce an incomparably pure sound.
The minute repeater
On demand, the minute repeater strikes the hours,
the quarter-hours, and the minutes that have elapsed
since the last quarter-hour. One hammer strikes the
hours on the low-pitched gong once for each hour.
Subsequently, each quarter-hour is sounded as an
alternating double strike by two hammers on both
the high- and low-pitched gongs. Finally, the second
hammer strikes the high-pitched gong to count the
number of minutes that have passed since the last
quarter-hour.
12 low strikes, three double high-low strikes, 14 high
strikes: This constitutes the melody with a total of
32 strikes at 12:59.
Reference 5073
Caliber R 27 Q
Self-winding wristwatch with
minute repeater and perpetual calendar.