In 2006 the manufacture introduced a new escapement that functioned
at a less frenetic 21,600 vph, but even at that time tests had shown
that the AP escapement was capable of running perfectly at 43,200 vph
or 6 hertz-even with virtually no lubrication from the pallet stones,
which would quickly dissipate at that speed anyway. The omission of
lubricant solves an issue which includes plagued watchmakers so long as
mechanical timepieces have existed: gumming or hardening of the oil.
This fresh escapement is dependent on an invention by Parisian royal
clockmaker Robert Robin (1742-1799). He developed a new system in 1791
that combined the virtues of the well-known escapements of the day,
so-called free-sprung escapement and one including energy transfer via
pallet fork and guard pin within the precursor towards modern Swiss
lever escapement as designed by Thosmas Mudge in 1759.
Audemars Piguet has succeeded in securing the important things about
both systems in its new high-frequency escapement, solving the oil
problem and introducing a completely new and important component to the
game: rate precision.”see more watches replica and Bvlgari Others
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