AUDEMARS PIGUET REF. 25820 AUTOMATIC PERPETUAL CALENDAR TANTALUM & PINK GOLD
Audemars Piguet, Genève, "Royal Oak - Perpetual Calendar Automatic," No. 007, case No. D80638,
Ref. 25820TR. Made circa 2001.
Very fine and rare, octagonal, self-winding, water-resistant, tantalum and 18K pink gold wristwatch with perpetual calendar, leap year indication, phases and age of the moon and a tantalum and 18K
pink gold Audemars Piguet bracelet with deployant clasp.
Three-body, solid, polished and brushed, octagonal bezel set with 8 hexagonal nuts embanked
in 8 screws on the case back, correctors on the band, transparent case back, sapphire crystals.
Pink gold with applied pink gold and black baton and dot indexes, subsidiary dials for the
days of the month, of the week, the months, leap year and the age of the moon, aperture for the
moon phases, outer minute divisions. Blackened gold baton hands.
Cal. 2120/4, rhodium-plated, 38 jewels, straight-line lever escapement, Gyromax type balance
adjusted to heat, cold, isochronism and 5 positions, shock absorber, self-compensating flat balance
spring, hand-engraved and skeletonized rotor with 21K gold segment.