Guba 875 new

 
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Guba 875 new

Description

Movements from Guba, Gustav Bauer in Ellmendingen near Pforzheim, Germany, are always quite a rarity, but this ladies’ watch caliber Guba 875, here in the new version, is really difficult to find. The term “new” is pretty misleading here, since the old and new version differ in so many parts, especially on the dial side, that they are in fact two different movements. The caliber number 875 indicates its diameter of 8 34 (=8.75) lignes.

It’s a bit difficult to say, when this movement debuted, maybe it was in the early 1950ies.

dial side

dial side

There are two noteable facts on this movement: First its red-golden color, second the ruby bearing for the minute wheel, which is pretty unusual for a movement of the early 1950ies and is responsible, that it already advertises with “17 jewels”.

gear train

gear train

The Guba 875 (new) has got the classical gear train: The mainspring barrel drives the center minute wheel, followed by third wheel, seconds wheel (with decentral seconds hand at 6 o’clock) and finally the escapement wheel.

side view of the gear train

side view of the gear train

The golden toned screw balance, which beats contemporarily slow with 18000 A/h is not yet shock protected. Its precise beat frequency can be adjusted with the hairspring key only, despite the “fast/slow dial on the balance cock”. These are the only two downsides on the otherwise very well made movement.

Guba 875 new: Dial side

Guba 875 new: Dial side

On the dial side, you see the yoke winding system with its characteristical setting lever spring. You also see the engraved caliber number. The old version of this movement differs a lot here, especially on the setting lever spring.

Technical data

Manufacturer:Guba
Caliber:875 neu
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel screw balance
Shock protection(s): none
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Hairspring key
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • mainspring barrel
Construction type:solid construction
Winding mechanism:yoke winding system
Setting lever spring:4 hole(s)
Functions:hour, minute, decentral second
A/h:18000
Size:8 3/4''' (measured: 19,1mm)
Literature: Flume: 1952 3
Inventory number:17051

Usage gallery

Accurata ladies' watch

Accurata ladies' watch

This movement was kindly donated by Günter G. Thank you very much for your support of the movement archive!

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