And below are pictures of Journe's first Tourbillon pocket watch he made in 1983.
Technical
Specifications_
Movement_ Calibre 1412
Manual winding / 29 turns of crown
Movement in brass, grained and golden 3N
Dimensions_ Overall
diameter : 32.60 mm
Cased-up diameter of mvt : 32.00 mm
Overall height of mvt : 5.95 mm
Height of winding stem : 2.50 mm
Diameter of stem thread : S1.20 mm
Features_ Escapement 15 teeth
90° Anchor fork
Balance with 4 inertia weights
Flat Anachron balance spring with Breguet overcoil
Fixed stud holder
Free-sprung
Spring pinned to collet
Pinned GE stud
2 barrels in parallel
Frequency : 21’600 VPH, (3Hz)
Inertia : 11.00 mgcm2
Angle of lift : 52°
Amplitude : 0h dial up : > 280°
24h
dial up : > 260°
Main Characteristics_
Tourbillon chronometer, revolution in 60 seconds
2 positions winding crown
Display_ Off centre hours and
minutes at 12h
Small second at 6h
2 positions winding crown
Power reserve_ Approximately
56 hours
Finishing_ Engraved
base plate, grained, golden 3N
Grained bridges, golden 3N
Screw heads polished and beveled, with chamfered slots
Blued screws
Pegs with polished rounded ends
Case_ 18K gold 4N and silver
guilloche
Double back Sapphire crystal and cover in gold and silver
guilloche
Diameter : 40 mm
Height : 10.00 mm
Dial_ Grained silver with
numbers and hour circle engraved and filled
Blued steel Abraham-Louis Breguet hands
Number of parts_ Jewels : 19
Movement without dial : 178