AUDEMARS PIGUET ROYAL OAK
JUMBO A SERIES STEEL
Audemars Piguet, Royal Oak Jumbo, Automatic,
case No. A 558, Ref. 5402ST. Made in the 1970s.
Very fine and rare, octagonal, self-winding, water-resistant,
stainless steel wristwatch with date and a stainless steel
Audemars Piguet bracelet with deployant clasp signed Gay
Frères. Accompanied by an Audemars Piguet box.
Two-body, polished and brushed, octagonal bezel set with
8 hexagonal nuts embanked in 8 screws on the case back, angled
lugs, screwed-down winding crown, sapphire crystal.
Anthracite, clous de Paris decoration, applied luminous steel
baton indexes, aperture for the date at 3. Luminous steel baton
hands.
Cal. 2121, 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.