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IWC Portuguese Perpetual Calendar
II Ardoise 18K White Gold Perpetual Calendar Moonphase Portugieser

Condition: | Original box | Original papers
Price on request
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Shipping and Seller Information

Item is in stock
Anticipated delivery: 6/7 - 6/12
4.9 ( )
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More About This Listing

Basic Info

Listing code CKCES2
Brand IWC
Model Portuguese Perpetual Calendar
Reference number IW502307
Movement Automatic
Case material White gold
Bracelet material
Crocodile skin
Year of production Unknown
Condition (Mint condition, without signs of wear)
Scope of delivery
Original box, original papers
Gender Men's watch/Unisex
Location United States of America, New York, New York
Price Price on request [Negotiable]
Availability Item is in stock


Movement Automatic
Movement/Caliber 51613
Power reserve 168 h
Number of jewels 62


Case material White gold
Case diameter 44.2 mm
Water resistance 3 ATM
Bezel material White gold
Crystal Sapphire crystal
Dial Grey
Dial numerals Arabic numerals


Bracelet material
Crocodile skin
Bracelet color Brown
Clasp Fold clasp
Clasp material White Gold


Moon phase, Date, Weekday, Month, Year, Perpetual calendar


Power Reserve Display


IWC Portugieser Perpetual Calendar II "Ardoise" Moonphase 18kt White Gold with Slate Anthracite Dial 44.2mm

IWC 5023 Portuguese Perpetual Calendar II, 18k white gold on a strap with an 18k white gold deployment buckle, automatic movement, metallic dial with white gold hands white gold applied Arabic numeral hour markers, perpetual calendar, date, month, moonphase, year, 7 day power reserve indicator, offset seconds hand, display back, sapphire crystal, water resistant to 30 meters, size: 44.2 mm, thickness: 15.5 mm

This is an 18K white gold IWC Portuguese Perpetual Calendar II IW502307.It has an alligator leather strap with an 18k white gold deployment buckle, and a scratch resistant sapphire crystal. It has a pull out signed winding crown, and there is an exhibition sapphire display case back secured with 6 screws, and it's engraved with a serial number. The 44.2mm diameter solid three-body case, curved lugs, and stepped bezel, are polished/brushed. The dial is "Ardoise" metallic grey, with applied white gold Arabic numerals around a white luminous railway-style minute scale with small square hour indices. It includes polished feuille leaf hands, and there are 4 recessed subsidiary dials with luminous white Arabic numerals and markers, and steel indicator hands, including a combination day and running constant small seconds register at 9 o'clock, a combination radial month/power reserve register at 3 o'clock with a red warning sector, and there is a full 4-digit year aperture window between 7 and 8 o'clock. It has a recessed moon phase dial at 12 o'clock with a white gold colored full-moon display mounted on a rotating grey disc with small gold stars. It's water resistant to 30 meters/100 feet, it has a 168-hour, 7-day power reserve at full winding, and the 15.5mm thick case, dial, and movement are all signed. Fitted on a black alligator leather strap with 18kt white gold fold-over deployant buckle.

This IWC Portuguese Perpetual Calendar II IW502307 has a mechanical automatic IWC caliber 51613 Pellaton movement. It's rhodium-plated with fausses cotes embellishment, and it's constructed with 62 jewels, a shock absorber mechanism, and a straight-line lever escapement. It has twin barrels mounted in series, a Glucydur beryllium alloy balance with a high-precision adjustment cam on balance arms adjusted to cold, heat, and 5 positions. It includes a self-compensating Breguet balance spring, blued screws, a micrometer regulator, and a skeletonized 22K rotor with a gold medallion inlay engraved “IWC - Probus Scafusia (Fine Schaffhausen).” It includes maintenance-free ceramic rotor bearings, winding pawls, and an automatic wheel. The mechanism oscillates at a frequency of 28,800 vph (3 Hz).

Reference No. IW502307

Retails for $44,400
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