Audemars PiguetRef. BA 4100/477
AUDEMARS PIGUET ROYAL OAK AUTOMATIC YELLOW GOLD
Audemars Piguet, "Royal Oak, Automatic", case No. 258, Ref. BA 4100/477. Made in the 1980's.
Fine and rare, octagonal, self-winding, water-resistant, 18K yellow
gold wristwatch with date and an 18K yellow gold Audemars Piguet
link bracelet with concealed deployant clasp. Accompanied by an
independent service invoice dated 2012.
Two-body, polished and brushed, octagonal bezel set with 8 hexagonal
nuts embanked in 8 screws on the case back, angled lugs with 4
screws to fix the bracelet, sapphire crystal.
Gray "clous de Paris" with applied luminous yellow gold baton
indexes, aperture for the date. Luminous yellow gold baton hands.
Rhodium-plated, fausses cotes decoration, 36 jewels, straight-line
lever escapement, Gyromax balance adjusted for heat, cold isochronism
and 5 positions, shock absorber, self-compensating flat balance
spring, 21K gold rotor.