Watchmaker · Jewelers’ Row, Philadelphia
Ostler
One watch at a time, made by hand. Turn it over, take it apart — it was made to be looked at this closely.
Book a fitting
01It keeps your time
Read at a glance, even in the dark.
The day and the date are today’s, and the running seconds at three step six times a second. Applied batons, each with a luminous insert in a polished frame, over a sunray dial that darkens toward its rim.
02Calibre O·2
Turn it over.
Behind the sapphire back, a hand-wound chronograph movement: 40 hours on a full wind, its balance swinging back and forth 21,600 times an hour.
03Every part, made or finished here
Take it apart.
Cut, finished and fitted in the workshop, then assembled, adjusted in five positions and cased by the same pair of hands.
- Sapphire crystaldomed, coated against reflection
- Dialsunray, three sub-dials
- Chronograph workscolumn wheel
- Mainplateperlage
- Going traingilt, circular-grained
- Three-quarter plateGlashütte stripes
- Balance21,600 beats an hour
- Sapphire backthe movement on show
04The finishing
Surfaces nobody will see, finished anyway.
- Glashütte stripes across the three-quarter plate
- Perlage on the mainplate beneath it
- Anglage: every edge bevelled and polished
- Heat-blued screws, blued over a flame, not painted
- A balance cock engraved by hand, no two alike
05Nº 047 of 150 this year
Made to be worn every day, and handed on.
- Case
- Steel, 42 mm across, 10.7 mm thick
- Crystal
- Sapphire, front and back
- Movement
- Calibre O·2, hand-wound chronograph, 40 hours
- Bracelet
- Steel, three rows, folding clasp
From $6,800