- Year
- 2026
- Condition
- Unworn
- Set
- Box and papers
- Movement
- Self-winding
- Size
- 34.5 × 39.5 mm
Set and condition
Complete set
This Rare Handcrafts Mount Merapi is accompanied by its original presentation box, warranty card and supporting documentation. The watch and included items are inspected by an expert watchmaker before sale. Additional photographs and video of this piece are available on request.
Original presentation box
Original presentation box and packaging.
Original papers
Warranty card and supporting documentation.
Inspected prior to sale
Reviewed for condition, completeness and functionality. Additional details and photographs are available on request.
Condition photography
Additional close-up images of specific areas are available before purchase.
Overview
The Golden Ellipse as a canvas
The Patek Philippe Rare Handcrafts Mount Merapi, reference 5738/50J-010, a Golden Ellipse in yellow gold with a dial in cloisonné and paillonné enamel and miniature painting showing the volcano erupting, on a shiny dark brown alligator strap. Self-winding calibre 240, hours and minutes only; 34.5 × 39.5 mm, 6.58 mm high.
The yellow gold execution 5738/50J-010 shows the Merapi volcano on Java, which Patek Philippe describes as Indonesia's most active. The outline took about 7.6 cm of gold wire (~0.04 g); the enameller worked from a palette of transparent and opaque enamels in 6 colours, set gold leaf beneath translucent enamel — the paillonné technique — to light the rivers of lava, and added 5 colours of miniature painting on enamel for the ash column and the glow on the slopes. Each dial took 10 firings at 770°C. The solid case back carries a stylised engraving of the volcano and its name. Patek Philippe presents it as a limited edition of fifteen watches, on a shiny dark brown alligator strap with a yellow gold prong buckle.
The reference 5738/50 is the Golden Ellipse of Patek Philippe's Rare Handcrafts collection: the elliptical case whose proportions the brand traces to the ancient golden section, here 34.5 × 39.5 mm and 6.58 mm high, with a solid case back. The dial carries only hours and minutes, read from cheveu-style hands stamped in the case metal.
The movement is the self-winding calibre 240, which Patek Philippe lists as ultra-thin: 27.5 mm across and 2.53 mm high, with 152 parts and 27 jewels, wound by a 22K gold minirotor set off-centre in the movement rather than a full rotor turning above it. It runs at 21,600 semi-oscillations an hour on a Gyromax® balance with a Spiromax® balance spring, has a power reserve of at least 48 hours and carries the Patek Philippe Seal. A calibre 2.53 mm high is what lets the case close at 6.58 mm over a dial built up in fired enamel or veneer. Patek Philippe describes the case as humidity- and dust-protected only, not water-resistant.
For collectors
Across the family the case and the movement do not change, so the executions are compared by the dial: Patek Philippe gives each one its own figures — the length and weight of gold wire in a cloisonné dial, the number of enamel colours, the firings and their temperature, or the count of veneer parts and wood species in a marquetry dial — and each is a limited series whose size the brand states. The solid case back is part of the design; the calibre 240 is not on view.
Key details
Design and engineering
- Golden Ellipse caseAn ellipse of 34.5 × 39.5 mm, 6.58 mm high, in yellow gold; Patek Philippe traces its proportions to the ancient golden section. Humidity- and dust-protected only, not water-resistant.
- Case backSolid yellow gold, engraved with a stylised image of the Merapi volcano and its name; the movement is not on view.
- DialGrand Feu cloisonné and paillonné enamel of Mount Merapi erupting: about 7.6 cm of gold wire (~0.04 g) for the outline, a palette of 6 colours of transparent and opaque enamel, gold leaf beneath translucent enamel for the lava, and 5 colours of miniature painting on enamel for the ash cloud; 10 firings at 770°C.
- HandsCheveu-style hour and minute hands, stamped in the case metal.
- Strap and buckleAlligator leather with square scales, hand-stitched, shiny dark brown, on a yellow gold prong buckle whose shape follows the ellipse of the case.
Calibre 240
- Self-winding, 22K gold off-centre minirotor
- Hours and minutes; listed by Patek Philippe as ultra-thin
- 27.5 mm across, 2.53 mm high; 152 parts, 27 jewels
- 21,600 semi-oscillations per hour (3 Hz), Gyromax® balance, Spiromax® balance spring
- Power reserve min. 48 hours
- Patek Philippe Seal
The reference
Technical specifications
| Reference | 5738/50J-010 |
|---|---|
| Collection | Rare Handcrafts |
| Calibre | Caliber 240 |
| Movement | Self-winding |
| Functions | Ultra-thin |
| Case dimensions | 34.5 × 39.5 mm |
| Case thickness | 6.58 mm |
| Case material | Yellow gold |
| Water resistance | Not water-resistant |
| Strap | Alligator leather with square scales, hand-stitched, shiny dark brown |
| Clasp | Yellow gold prong buckle |
| Jewels | 27 |
| Power reserve | min. 48 hours |
| Frequency | 21,600 semi-oscillations/hour (3 Hz) |
| Piece | Mount Merapi |
Buying with HYPA
Purchase with confidence
- Original warranty card included, dated 2026
- Free insured delivery within Australia and Hong Kong · elsewhere quoted
- Payment by bank transfer
- Registered Australian dealerHYPA International Pty Ltd · Registered Victorian second-hand dealer, Registration No. SHD-0018017.
- Direct specialist supportSpeak with the HYPA team before, during and after the purchase.
- Rated 5.0 on Google · 11 reviewsFrom clients of HYPA International on Google. Read the reviews
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