Royal Oak Day-Date Moon Phase

SPECIFICATIONS 

Brand: Audemars Piguet
Model: Royal Oak Day-Date Moon Phase
Reference Number: 25594SA.OO.0789SA.01
Movement: Automatic
Gender: Mens
Condition: Excellent
Time Period: 1980s
Box: Yes
Papers: No

THE CALIBER

Caliber: 2124/2825
Jewels: 33

THE CASE

Case Material: Stainless steel
Case Diameter: 36.5 mm
Thickness: 9 mm
Waterproof: 100 ft. / 30 m. / 3 ATM
Bezel Material: Fixed 18K yellow gold secured with eight white gold screws
Glass: Sapphire Crystal
Caseback: Solid
Dial: Cream with waffle "Grande Tapisserie" decoration
Dial Numerals: 18K yellow gold applied with luminescent coating faceted baton hour indices

THE BRACELET / STRAP

Bracelet Material: 18K yellow gold and stainless steel
Buckle: Fold-over Audemars Piguet
Buckle Material: Stainless steel

THE FUNCTIONS

Hours, minutes, subsidiary day of the week dial at 9 o'clock, subsidiary date of the month dial at 3 o'clock, moon phase indicator at 6 o'clock, 45-hour power reserve

FURTHER READING 

The "SA" on the reference number denotes that this piece is composed of stainless steel and yellow gold, with an 18K yellow gold bezel secured by eight white gold screws. The integral, articulated, two-tone Royal Oak bracelet is completed with stainless steel folding Audemars Piguet clasp. The dial displays three complications; the sub-register at 9 o'clock registers the current day, the one at 3 o'clock shows the date, and the moon phase aperture is at six o'clock. It is easy to see why so many watch enthusiasts consider the Audemars Piguet Royal Oak the holy grail of timepieces as it exemplifies sporty-casual design and Swiss watchmaking of the highest caliber.

Octagonal shape case designed by Gerald Genta
18K yellow gold applied and luminescent coating Royal Oak hour/minute hands, yellow gold stick-shaped sub-dial hands
Stainless steel solid case back secured with eight white gold screws
Stainless steel screw-down hexagonal crown
The three-body case, lugs, and flat bezel are polished/brushed.
Integral 18K yellow gold and stainless steel link bracelet with a stainless steel deployant buckle and downturned integral stainless steel lugs.

This Audemars Piguet Royal Oak ref. 25594 SA has a mechanical automatic Audemars Piguet caliber 2124 movement rhodium-plated, with fausses cotes embellishment. The rotor is mounted on a ball bearing with a peripheral mass in 22K gold. It has a round shape, 26mm diameter, and thickness of 4.55 mm. It is constructed with a smooth balance in Glucydur, 33 rubies (escapement wheel with end stone), a flat balance-spring in Nivarox 1 with an adjustment device with a micrometric screw, Kif anti-shock. The plate is perlage decorated, the bridge and rotor are Vagues de Genève decorated, and Anglage finished, the screw heads are mirror-polished.

This ref. 25594 SA powered by the self-winding caliber 2124/2825 was introduced around 1984. The 2825 moon phase and day date modifiers are put on the base 2124 auto with date window movement, a JLC base caliber fine finished and adjusted at AP.
The screw-down crown controls ALL functions - day, date, moon phase, and of course, the hour and minutes.

Defining the crown positions as follows:

P0 = crown pushed in all the way
P1 = crown out first detente position
P2 = crown out second detente position, or fully out
P0 is a neutral position and allows to wound the automatic movement manually.
P1 = moon phase setting; turning the crown upward (toward 12) advances the moon phase without affecting other settings or functions.
P2 = in this position, the crown directly controls the hour and minute hands. Thus, at 12 am indicated, the date advances, and at 1:30 am, the day of the week advances.
As a result, when you set the time manually, through its 24-hour cycle, the date advances at midnight every day, while the day of the week advances an hour later.
The mechanism oscillates at the frequency of 21,600 vph (3 Hz).
Case, dial, and movement are all signed.
Incomplete (box, no papers)

Warranty & authenticity

We stand behind the authenticity and quality of our merchandise, nothing is more important to us that a transparent transaction that makes our clients well-pleased.
Twain Time has more than 30 years of experience in buying and selling previously owned luxury goods, and quality-control is extremely important to us. Our trusted experts take the worry out of buying so that you can focus on finding your most desirable watch or jewelry.
Every item has undergone a thorough inspection by our knowledgeable technicians, ensuring full originality (unless stated otherwise) and perfect working condition to assure you get everything as expected. We know the value of security.
To provide further peace of mind, we offer a 12-month limited warranty alongside any remaining manufacturer’s warranty on all our luxury timepieces and fine jewelry from the date of purchase.
Please see our Terms & Conditions for further information.

Shipping & Returns

We offer a fully insured domestic & worldwide, express & priority delivery service. If ordering from the US, your order will be sent immediately after the reception of the funds.
The courier will depend on the value of the purchase, with all orders delivered the next business day. If ordering from outside the US, your order will be sent immediately after reception and clearance of the funds. International deliveries will depend on the choice of the courier and the destination. Our commitment does not end at delivery.
We offer a 7-day store credit/exchange to make your experience as pleasant and comfortable as possible.
Please see our Terms & Conditions for further information. We make continuous efforts to provide outstanding service. We value our clients' relationships and strive to offer the highest quality of customer service at every opportunity.