Watch Movement Handwinding mechanical Sonceboz ES 55 NOS & 1 jewels Voumard #6

Sonceboz ES 55? (not sure, it could also be ES 54)

The only difference between the two variants is the engraving; otherwise they are identical

Var. 1: 1 jewel, unadjusted

Var. 2: BLENO WATCH SA. 1 jewel, unadjusted, SWISS

Scope of delivery:

Sonceboz ES 55 x 1 ?

Hand-winding movement

New Old Stock, working well,

Diameter: approx. 27.0 mm (12“`)

H: 4.9 mm (from bottom to the top of the date indicator)

Shock-protected

Pin lever escapement

1 jewel, 21’600 A/h, from the ’70s

Almost impossible to find

It comes in the original plastic box

Due to the long storage time, small traces may have formed on the movement, but this has no effect on its function. Because the movement is more than 40 years old, it should be cleaned or at least oiled before installation; a fine adjustment may be necessary.

Some useful information from the web (from the ranfft website),

but it has not been checked for correctness:

Dm= 26.6mm, Do= 27.0mm

F= 0.65mm

T= 1.9mm

Do outer diameter, thus the largest. Most movements have a flange slightly bigger than Dm, to rest on the case band or mounting frame.

Dm mounting diameter. With this diameter, the movement fits into the aperture of the case or mounting frame.

F mounting height, distance between dial plane* and mounting flange.

T stem height, distance between dial plane* and stem center.

*) Movements with display discs on the dial side (e.g., calendar) occasionally have no dial support. In this case, the surface of the discs is taken as the reference plane for H, F, and T. If a dial spacer that is not permanently fixed is supplied with the movement, its additional height is mentioned.

Hands: 1.50 x 0.90 x 0.20 mm

Bleno Watch, Etor Watch, Micky Mouse Watch, Delemont Watch, Majesti Watch, Replacement Movement, Kienzle 053011