Before you open the movement
Case Construction
The eight case types, the four dust seals, and how to remove a case back, from the factory repair manuals.
Mechanical
Hand-wound calibres, most of them on the V-Conic bearing system.
17 manuals
M21 / M22 / M23 / M26 / M29
The Model 21 Series
One factory manual covers all five of these calibres.
Type
Hand-wound
In archive
21 watches
M23
The Model 23
A 6‴ x 8‴ movement. V-Conic bearings, two plate.
Size
6‴ x 8‴
Type
Hand-wound
In archive
4 watches
M24
The Model 24
An 11¼‴ x 9¼‴ movement. V-Conic bearings, two plate.
Size
11¼‴ x 9¼‴
Type
Hand-wound
In archive
36 watches
M25
The Model 25
An 11¼‴ x 9¼‴ calendar movement. Built on the construction of the Model 24.
Size
11¼‴ x 9¼‴
Type
Hand-wound
Based on
Model 24
In archive
21 watches
M27
M27
The Model 27
A 13 ligne day & date movement.
Size
13 ligne
Type
Hand-wound
In archive
8 watches
M72
M72
The Model 72
An 11¼‴ x 9¼‴ movement. The manual states 21 jewels. Two plate, full plates.
Size
11¼‴ x 9¼‴
Type
Hand-wound
Jewels
21
In archive
1 watch
M75
M75
The Model 75
An 11¼ x 9¼ ligne calendar movement. The manual states 21 jewels. Two plate.
Size
11¼ x 9¼ ligne
Type
Hand-wound
Jewels
21
In archive
3 watches
M78
The Model 78
An 8‴ x 9½‴ movement. V-Conic, full plates.
Size
8‴ x 9½‴
Type
Hand-wound
M79
M79
The Model 79
A 7¼ ligne round movement. The manual states 17 jewels. Plate and bridge, jewelled lever escapement.
Size
7¼ ligne round
Type
Hand-wound
Jewels
17
M80
M80
The Model 80
An 8 x 9½ ligne movement. Built on the construction of the Model 78. V-Conic, two plate.
Size
8 x 9½ ligne
Type
Hand-wound
Based on
Model 78
M81
M81
The Model 81
A 9¾ ligne calendar movement. Built on the construction of the Model 80.
Size
9¾ ligne
Type
Hand-wound
Based on
Model 80
M100
The Model 100
An 8 x 9½ ligne movement. V-Conic, two plate, similar to 78 and 80.
Size
8 x 9½ ligne
Type
Hand-wound
M101
M101
The Model 101
A 9½ ligne calendar movement. V-Conic.
Size
9½ ligne
Type
Hand-wound
M102
M102
The Model 102
A 9½ ligne day & date movement. V-Conic.
Size
9½ ligne
Type
Hand-wound
M104
M105
The Model 105
A 13 ligne calendar movement. Built on the construction of the Model 104.
Size
13 ligne
Type
Hand-wound
Based on
Model 104
In archive
4 watches
M106
M106
The Model 106
A 13 ligne day & date movement. Built on the construction of the Model 104. Fast change, V-Conic.
Size
13 ligne
Type
Hand-wound
Based on
Model 104
In archive
2 watches
M114
The Model 114
An 8 x 9½ ligne hand-wound movement. Details and photograph from 17jewels.info.
Size
8 x 9½ ligne
Type
Hand-wound
Source
17jewels.info
M116
The Model 116
A hand-wound movement. Details and photographs from 17jewels.info.
Type
Hand-wound
Source
17jewels.info
M181
The Model 181
A 10½ ligne movement, the same as the AS 1941. Details and photograph from 17jewels.info.
Size
10½ ligne
Source
17jewels.info
Self-Winding
Rotor calibres, each built on the construction of a hand-wound model.
7 manuals
M31
The Model 31
A 13 lig. 29.08 mm self-winding movement. Built on the construction of the Model 24. Thin, planetary gear winding.
Size
13 lig. 29.08 mm
Type
Self-winding
Based on
Model 24
In archive
5 watches
M32
M32
The Model 32
A 13 lig. 29.08 mm self-winding calendar movement. Built on the construction of the Model 24. Calendar as Model 25.
Size
13 lig. 29.08 mm
Type
Self-winding
Based on
Model 24
In archive
10 watches
M33
The Model 33
A 13 lig. 28.96 mm self-winding day & date movement. Built on the construction of the Model 31.
Size
13 lig. 28.96 mm
Type
Self-winding
Based on
Model 31
In archive
4 watches
M74
The Model 74
A self-winding movement. Built on the construction of the Model 72. Thin.
Type
Self-winding
Based on
Model 72
In archive
2 watches
M107
M107
The Model 107
A 13 ligne self-winding movement. V-Conic, two plate.
Size
13 ligne
Type
Self-winding
M108
The Model 108
A 13 ligne self-winding date movement. Fast change date.
Size
13 ligne
Type
Self-winding
In archive
1 watch
M109
M109
The Model 109
A 13 ligne self-winding day & date movement. Fast change.
Size
13 ligne
Type
Self-winding
In archive
4 watches
Electric
Battery driven, with a balance wheel impulsed electrically.
15 manuals
M40
M40
The Model 40
A 9¾ x 12¾ ligne electric movement.
Size
9¾ x 12¾ ligne
Type
Electric
In archive
3 watches
M41
The Model 41
A 9¾ x 12 ligne electric calendar movement.
Size
9¾ x 12 ligne
Type
Electric
In archive
6 watches
M42
M67
The Model 67
A 13½ ligne electric movement. Caliber 861 & 860.
Size
13½ ligne
Type
Electric
In archive
7 watches
M69
M71
The Model 71
A 9¾ ligne round electric calendar movement.
Size
9¾ ligne round
Type
Electric
M82
The Model 82
An electric movement. World's first Ladies' Electric Wrist Watch.
Type
Electric
M84
The Model 84
A 13½ ligne electric movement. Caliber 870/871.
Size
13½ ligne
Type
Electric
In archive
3 watches
M85
M85
The Model 85
A 13½ ligne electric calendar movement. Built on the construction of the Model 84. Caliber 880/881.
Size
13½ ligne
Type
Electric
Based on
Model 84
In archive
1 watch
M253
M253
The Model 253
A 9¾ x 12¾ ligne electric movement. High frequency balance.
Size
9¾ x 12¾ ligne
Type
Electric
In archive
2 watches
M254
M254
The Model 254
A 9¾ x 12¾ ligne electric calendar movement. High frequency.
Size
9¾ x 12¾ ligne
Type
Electric
In archive
1 watch
M255
M255
The Model 255
A 13½ ligne round electric day & date movement. High frequency.
Size
13½ ligne round
Type
Electric
M260
M260
The Model 260
An 11¾ x 12¾ ligne electric movement. High frequency balance.
Size
11¾ x 12¾ ligne
Type
Electric
M262
M262
The Model 262
An 11¾ x 12¾ ligne electric day & date movement. High frequency.
Size
11¾ x 12¾ ligne
Type
Electric
M265
M265
The Model 265
A 9¾ x 12 ligne electric calendar movement. High frequency.
Size
9¾ x 12 ligne
Type
Electric
Electronic
The later battery calibres the manuals call electronic rather than electric.
5 manuals · 1 bulletin guide
M50
The Model 50
A 9¾ x 12¾ ligne electronic movement.
Size
9¾ x 12¾ ligne
Type
Electronic
In archive
1 watch
M51
M51
The Model 51
A 9¾ x 12¾ ligne electronic calendar movement.
Size
9¾ x 12¾ ligne
Type
Electronic
In archive
2 watches
M52
M52
The Model 52
A 13½ ligne electronic day-date movement.
Size
13½ ligne
Type
Electronic
In archive
1 watch
M65
M65
The Model 65
A 9¾ x 12¾ ligne electronic calendar movement.
Size
9¾ x 12¾ ligne
Type
Electronic
In archive
4 watches
M87
M87
The Model 87
A 13½ ligne electronic movement. Caliber 882.
Size
13½ ligne
Type
Electronic
M62
M62 / M63 / M93
The First Timex Quartz
The quartz calendar and day-date of 1972 and the liquid crystal digital of 1974, from the service bulletins.
Type
Quartz
Source
Service bulletins
M43
The Model 43
A 10½ ligne quartz movement. Details and photographs from 17jewels.info.
Size
10½ ligne
Type
Quartz
Source
17jewels.info
M64
The Model 64
A quartz movement. Details and photographs from ranfft.org.
Type
Quartz
Jewels
2
Source
ranfft.org
M66
The Model 66
A quartz movement. Details and photograph from 17jewels.info.
Type
Quartz
Source
17jewels.info
M73
The Model 73
A 13½ ligne quartz movement. Details and photographs from ranfft.org.
Size
13½ ligne
Type
Quartz
Jewels
2
Source
ranfft.org
M272
The Model 272
An 8½ x 10 ligne quartz movement. Details and photograph from 17jewels.info.
Size
8½ x 10 ligne
Type
Quartz
Source
17jewels.info
M281
The Model 281
A 9 ligne quartz movement with a four-digit LCD. Details and photographs from 17jewels.info.
Size
9 ligne
Type
Quartz
Source
17jewels.info
M416
The Model 416
A 10 ligne quartz movement with a four-digit LCD. Details and photographs from 17jewels.info.
Size
10 ligne
Type
Quartz
Source
17jewels.info