Independents

SJX
[Purist]
8540

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It is a monopusher chronograph with co-axial minutes and seconds counters

hence the clean look.
 
Here are details of the watch:
 
CASE

Platinum 950,
diameter 44 mm,
sapphire glass on the top and on the bottom,
crocodile leather strap with buckle in platinum,
crown with integrated monopusher
 
DIAL

Simple sunk enameled dial with roman numerals,
eccentric second hand,
centric chronograph minutes and seconds counter,
spade hands in rose gold or blued steel
 
MOVEMENT

Manual winding movement Caliber IV,
46 hours running time,
second hand stop mechanism, chronograph mechanism installed on the backside

And movement specs:
 
DIAMETER
16 ¼ lines (36,6 mm)
 
FREQUENCY
18.000 semi-oscillations per hour
 
RUNNING TIME
46 hours
 
JEWELS
22 rubies, 1 diamond

- Shock-resistant gold-screw balance
- Breguet spring
- Swan-neck fine adjustment
- Pulsating eccentric second hand
- Second hand stop mechanism
- Winding wheels with double solar finish
- Monopusher column wheel chronograph
- Chronograph wheels in gold with two hundred teeth
- Minutes counter mechanism installed on the backside
- Frictionless decoupling of the minutes counter, when the chronograph function is not in use

- SJX

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