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Doxa 90
Manual · 5.75‴ · Switzerland · 1965
Dimensions
12.97 mm
Height
3.10mm
Jewels
17
Power reserve
42h
Timegrapher
Beat rate
21,600bph
Frequency
3Hz
Lift angle
0°
Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.
Movement
| Movement type |
Manual
Purely mechanical movements wound by hand via the crown, which tensions the mainspring to store energy. As the spring unwinds, it drives the gear train at a controlled rate set by the escapement and balance. Typical power reserves range from 38 to 80 hours, requiring daily or near-daily winding to keep the watch running.
|
|---|---|
| Winding type |
Back Winding
A stem-winding configuration where the crown is located on the caseback rather than the side of the case, allowing a crownless dial. Found in mid-20th-century manual calibres (Felsa, LeCoultre Duoplan, Movado 53/54, Omega 440/640, Voumard) and in electromechanical movements like the Bulova Accutron 214 and Durowe balance-motor calibres. Mechanically a variant of stem winding.
|
| Setting type |
Stem Set (Crown Pull)
The dominant modern system: pulling the crown out to a setting position engages the hand-setting mechanism. Introduced in the late 19th century and refined into multi-position crowns (date, time, GMT). Used in virtually all modern wristwatches and most 20th-century pocket watches.
|
| Escapement type |
Swiss Lever
The undisputed standard of modern mechanical watchmaking. Through an elegant interplay between escape wheel, pallet fork, and balance, it delivers reliable impulses with the safety of 'draw' to keep the lever locked. Refined since the 18th century, it powers almost every quality mechanical wristwatch made today.
|
| Control type |
Balance Wheel
The heart of mechanical timepieces, the balance wheel is an oscillating component that, together with the hairspring, forms a harmonic oscillator regulating the gear train's pace. Its steady back-and-forth motion ensures the even release of energy from the mainspring, governing the watch's accuracy.
|
| Regulator type |
Pinned Regulator (or Index Regulator)
The most traditional regulator, consisting of a movable index pointer fitted with two curb pins (or a pin and a boot) that embrace the hairspring. Sliding the index along its scale changes the spring's active length, adjusting the rate. Simple, reliable, and easy to service, it remains the workhorse standard across countless mechanical movements.
|
| Shock protection |
Incabloc
The most famous and widely used shock protection system in horology. Invented in 1934 by Georges Braunschweig and Fritz Marti at Universal Escapements (La Chaux-de-Fonds), it employs a lyre-shaped spring holding the jewel setting, allowing it to shift under impact and return to position. Adopted by countless Swiss makers across the 20th century.
|
Specifications
| Lignes | 5.75‴ |
|---|---|
| Shape |
Round
It is the most common form that we can find.
|
| Hand count | 2 |
| Hand sizes | 0.99 x 0.49mm |
| Further measures | Mounting Diameter (Dm): 13.2mm |
Origin & References
| Manufacturer | Doxa |
|---|---|
| Country | Switzerland |
| Launch year | 1965 |
| COSC certified | No |
| Signature | ca. 1965: 59, Ebel, Fab Suisse; Incabloc
(Ebel 59, stem winding) |
| US import codes |
|
Notes
Remarks: Girocap combined settings for escapement wheel
indirectly driven minute allows a very big balance
These movements are obviously a joint venture of Doxa, Ebel, Eberhard, Favre-Leuba, Girard-Perregaux, Juvenia, and Zodiac.
Bestfit mentions the calibres Felsa 4035 and 4036 as equivalent, but as these are not contained in any other register, it is uncertain who actually produced them.
Other data: balance staff: U2838 stem: - mainspring / battery: 1.50 x 5.5 x 0.06mm
indirectly driven minute allows a very big balance
These movements are obviously a joint venture of Doxa, Ebel, Eberhard, Favre-Leuba, Girard-Perregaux, Juvenia, and Zodiac.
Bestfit mentions the calibres Felsa 4035 and 4036 as equivalent, but as these are not contained in any other register, it is uncertain who actually produced them.
Other data: balance staff: U2838 stem: - mainspring / battery: 1.50 x 5.5 x 0.06mm
Compatible Parts
223 other catalog sources can supply compatible parts for this caliber.
9 compatible parts catalogued · find a donor to harvest a scarce part.
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