I · The Maker/II · The Object/III · The Record/IV · Acquisition
Room I · The Maker
Patek Philippe has occupied the summit of Swiss watchmaking since 1839, its name synonymous with the highest finishing and the strictest internal standards. The Geneva Seal, the Poinçon de Genève, was, at the time this watch was made, an independent governmental certification of movement finishing and assembly, awarded only to watches whose movements met exacting decorative and functional criteria. A Patek Philippe bearing this seal represents the intersection of two quality regimes, one imposed by the house and the other by the canton.
The Object
A Patek Philippe open face in 18ct yellow gold with the Geneva Seal: caliber 17-140 confirmed on the movement plate, regulated to the fullest specification the house offered, its silvered dial in the clean mid-century style of the Calatrava era.
Some Patek Philippe pocket watches were made as spectacle. This one was made simply to be correct: an open face of 42.5mm in 18ct yellow gold, the discreet format of the mid-century, its edges still sharp. In the hand it is compact and dense, smaller than the railway-grade open faces of the earlier generation but heavier than it looks, the way solid gold at this scale always is.
The dial is silvered metal in the design language Patek Philippe used across its mid-century production: applied 18ct gold faceted lance indexes in place of numerals, matching gold dauphine hands, a minute track of small dots, and a recessed subsidiary seconds register at six. It is the restrained look of the Calatrava wristwatches of the period, applied to a pocket watch. The surface is even and clean, the printing sharp, and the indexes still catch the light on their facets.
A watch like this was bought by someone who understood exactly what they were paying for: not size, not decoration, but regulation and finish. Sixty or seventy years later that is still the whole point of it, and it has barely aged in the keeping.
The seal, the marks, the movement and the condition are set out piece by piece in the drawers below; the reference and archive record are set out in The Record.
Beneath the case
Open each drawer to look closer
Mark 1
Geneva Seal
The Poinçon de Genève, an independent cantonal certification of movement finishing and assembly quality, confirmed on the movement plate.
Mark 2
18ct Gold
Swiss hallmarks confirming 18-carat yellow gold case construction.
- ACaliber 17-140Patek Philippe's manual-wind movement with lever escapement, bearing the Geneva Seal on the plate.
- B18 JewelsEighteen jewels set throughout the gear train and escapement for reduced friction and consistent timekeeping.
- CFive-Position AdjustmentAdjusted to five positions and to the extremes of temperature and isochronism: the full suite of precision regulation.
- DMovement Serial 893124The serial number places production in the late 1950s to early 1960s, consistent with the 600-series reference.
Case
Excellent
18ct yellow gold with sharp edges retained; minimal wear consistent with age only.
Dial
Pristine
White enamel clean throughout, no chips, hairlines, crazing, or spotting.
Movement
Excellent
Caliber 17-140 running well; winds and sets correctly, keeps good time.
Crystal
Excellent
Intact with no damage, cracks, or crazing.
Crown
Excellent
Winds and sets with normal action.
42.47
This watch
25.75
€2 coin
A €2 coin is 25.75 mm. This case is more than two and a half times its area.
Room III · The Record
Reference 600J, Geneva Seal certified, c.1955-1965
The reference is strongly indicated as 600J, Patek Philippe's yellow gold open-face designation in the 600 series. The movement serial 893124 and case number 318652 place the watch in the late 1950s to early 1960s. An Extract from the Archives can be requested to confirm the original specification and date of sale.
- Maker
- Patek Philippe
- Model
- 600J (strongly indicated)
- Case
- 18ct yellow gold (open face)
- Diameter
- 42.47mm
- Dial
- Silvered, applied gold indexes, sub-seconds
- Movement
- Caliber 17-140, manual wind, lever escapement
- Jewels
- 18
- Adjustment
- Heat, cold, isochronism, five positions
- Complications
- Subsidiary seconds
- Country
- Switzerland
- Hallmarks
- Geneva Seal (Poinçon de Genève); case No. 318652
- Movement serial
- 893124
- Case number
- 318652
- Estimated date
- C.1955–1965
The Estate Collection
Room IV · Acquisition
€11.000
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Patek Philippe
€11.000
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Geneva-Sealed 18ct Gold
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