quattro[Moderator]
20809
Two masterpieces by George Daniels
Same size, same unusual crown position, two tourbillon timepieces by a master watchmaker...
Best, Emmanuel
A/ The Chronograph Wristwatch
This 42 mm watch with an unusual crown at 12 o'clock has three complications:
- a power reserve indicator at 12 o’clock
- a chronograph with pushers unusually placed on the left of the case
- a four-minute tourbillon with Co-Axial escapement
Elapsed seconds &
minutes are combined on the
left sub-dial. The
constant seconds sits on the
right sub-dial.
Detailed views of the guilloché dial
Grooved case back with see-through sapphire
The movement with four-minute Tourbillon & Chronograph mechanism
Visible at the right of the Tourbillon, the chronograph mechanism is made of a clutch-type system which engages and disengages the chronograph function from the going train
The Tourbillon with Co-Axial escapement
The watch on the wrist
B/ The “Spring Case” Tourbillon Wristwatch
This 42 mm wristwatch with crown at 12 o'clock is double-sided:
- The front side displays only the time (the hours and minutes in the centre with the seconds in an oversized sub-dial) and a power reserve indicator at 12 o’clock
- The back side shows a second dial with twin registers indicating the calendar (with the day at 2 o’clock and the date at 11) and, at 6 o'clock, a compact one-minute tourbillon featuring a “slim-line” Co-Axial escapement
The front with hour display
The back with Day-Date Calendar and four-minute Tourbillon
The case is made up of two components:
- an inner case holding the movement
- an outer case with the lugs.
A hinge at 3 o’clock secures the inner case to the outer one.
The inner case can be popped open via a pusher at 9 o'clock to reveal the reverse face while the watch is on the wrist (of a left-handed wearer) thanks to a curved spring that runs alongside the inside circumference of the outer case
The 3 o'clock hinge
Detailed views of the front dial
Detailed views of the back dial
The watch on the wrist
C/ Both watches together
Chronograph (left) & "Spring Case" (right)
Side view ("Spring Case" in the forefront with the 9 o'clock pusher enabling the opening of the watch)
Back view (Chronograph on the left & "Spring Case" on the right)

credit to all photos: Sjx & Phillips (only for the second photo of the opened case, with the 9 o'clock opening pusher in the forefront)