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The Encyclopedia of Horology

Wristwatch · Calatrava with power reserve and moon phase

Patek Philippe Calatrava Reference 5015-J Wristwatch

Partially verified

This Patek Philippe Calatrava wristwatch, reference 5015-J, is constructed from 18k yellow gold and features a power reserve display and moon phase indicator. The watch is defined by a hinged case back that opens to reveal the movement. It is fitted with an 18k yellow gold buckle and a leather strap, both bearing Patek Philippe signatures. The watch has a recorded total weight of 68.02 grams. Attributed to the period of circa 1994 to 1999, the timepiece originates from the collection of Colonel John "Jack" L. Milton (1923-2025). The auction description reports that the movement operates and the hands move, although long-term performance remains unverified. The watch is sold without original box or papers, and the report notes surface scratches on the case and buckle, alongside signs of wear on the leather strap.

Front view of the Patek Philippe 5015-J wristwatch showing the dial with power reserve and moon phase complications.
Front view of the Patek Philippe 5015-J wristwatch showing the dial with power reserve and moon phase complications. — Potomack Company via Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Calatrava with power reserve and moon phase
Maker / attribution
Patek Philippe
Reference
5015-J
Catalogue / lot identifier
4009
Source-reported date
circa 1994-1999
Source-reported place
Not established
Source-reported serial
2938847

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial

The Patek Philippe 5015-J is crafted from 18k yellow gold and presents with a distinctive hinged case back, which functions as a secondary protective cover for the movement. The dial is equipped with multiple complications including a power reserve indicator and a moon phase display. The watch is secured with a leather strap and is finished with an 18k yellow gold buckle signed by the manufacturer.

Surface condition reports from the auction house indicate visible scratches on both the case and the buckle. The leather strap shows signs of wear, consistent with the reported history of the watch within the collection of Colonel John L. Milton. The total weight of the object is recorded at 68.02 grams.

Evidence for this section
  • “ساخته شده از طلای زرد 18 عیار”
  • “این مدل دارای قاب پشتی لولایی است که با باز کردن آن، پوشش محافظ موتور نمایان می‌شود.”
  • “بند و سگک ساعت دارای نشان پتک فیلیپ هستند.”
  • “خراش‌های سطحی روی قاب و سگک مشاهده شده است.”

Movement and Functionality

The watch features a movement visible beneath the hinged case back. According to the auction description provided by the Potomack Company, the watch is currently functional, with the hands moving as intended at the time of inspection.

Documentation regarding the specific caliber or service history is not provided, and the watch is sold as an individual lot without its original manufacturer's box or accompanying certification papers.

Evidence for this section
  • “پوشش محافظ موتور نمایان می‌شود”
  • “ساعت هنگام استفاده کار می‌کند و عقربه‌ها حرکت دارند”
  • “حراجی عملکرد طولانی‌مدت آن را تضمین نمی‌کند”
  • “عدم وجود جعبه و مدارک توسط حراجی تأیید شده است.”

Provenance and Documentation

This timepiece was previously part of the collection of Colonel John "Jack" L. Milton (1923-2025), a resident of Arlington, Virginia.

The attribution of the watch's manufacturing period is dated by the source to approximately 1994 to 1999. The item was catalogued as lot 4009 for an auction scheduled by the Potomack Company.

Evidence for this section
  • “این ساعت متعلق به مجموعه کلنل جان «جک» ال. میلتون (1923-2025)”
  • “دوره منتسب به نمونه حدود ۱۹۹۴ تا ۱۹۹۹ است.”
  • “شماره لات: 4009”

Open research questions

  • Confirm the specific caliber movement model used for the 5015-J reference.
  • Verify the specific production range for reference 5015-J to narrow the 1994-1999 dating.

Source evidence

Recorded claims and source quotations for Patek Philippe Calatrava Reference 5015-J Wristwatch
FieldSource-reported valueSource quotation
MakerPatek Philippe“پتک فیلیپ”
Reference5015-J“رفرنس 5015-J”
Material18k yellow gold“طلای زرد 18 عیار”
Weight68.02 grams“۶۸٫۰۲ گرم”
Lot Number4009“شماره لات: 4009”
ProvenanceColonel John "Jack" L. Milton“مجموعه کلنل جان «جک» ال. میلتون”
Periodcirca 1994-1999“حدود ۱۹۹۴ تا ۱۹۹۹”

Visible details

  • Hinged case back with movement cover
  • Power reserve scale on dial
  • Moon phase aperture at lower left
  • 18k yellow gold buckle stamped with PP Co.

Research qualifications

  • Long-term movement performance is not guaranteed
  • Provenance is linked to Colonel John L. Milton, but not further authenticated

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

PATEK PHILIPPE REFERENCE 5015-J 18K YELLOW GOLD POWER RESERVE MOON PHASE CALATRAVA MEN'S WRISTWATCH

Reviewed 2026-11-02 · Record c816b6ded9

Terms in this record

Glossary explanations for terms named in this object’s record.