Cupillard 55-A 21
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| Cupillard 55-A 21 |
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Description
The Cupillard 55-A 21 is a pretty interesting movement, since according to the Flume K3
list, it should not exist.
Cupillard made a caliber 55-A, beating with 18000 A/h, but did not produce a 55-A 21, beating with
faster 21600 A/h. However, France Ebauches, which was a union of large movement manufactories, including
Cupillard, released a caliber 55-A 21, so the "Cupillard 55-A 21" was probably made during the
transition and creation process of the France Ebauches.
The three-leg ring balance is beared in two french shock protections of type Antichoc S 65 and
golden-toned. Its hairspring is connected with a moveable stud onto the balance cock and has got no
long regulator arm for adjustment.
The movement works is pretty much standard with its directly driven minute hand.
On the dial side, you see the yoke winding system and preparations for alternative shock
protection systems and cap jewels.
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| dial side view |
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Technical data
| Manufacturer | Cupillard |
| Caliber | 55-A 21 |
| Number of jewels | 17 |
| Escapement | Anchor with pallets |
| Balance | Nickel |
| Shock protection(s) | Antichoc S65 |
| Balance cock direction | counterclockwise |
| Hairspring stud | moveable |
| Regulator type | Hairspring key |
| Movement construction | Fork
Escapement wheel, Fourth wheel, Third wheel, Center wheel
Mainspring barrel |
| Winding mechanism | yoke |
| Setting lever spring | 3 holes |
| Functions | Hour, minute |
| Beats per hour | 21600 |
| Size | 51/4 x 81/2''' (measured: 12,7 x 19,1 mm) |
| Image in Flume Werksucher | K3 N1 - |
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| Factsheet |
Usage gallery
