pocket watch movement identification sorted by

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1" dating from around 1891-92.

The stem, which is missing in the image, doesn't move and is normally held in a fixed axial position by the small plate above the left hand arm of the cover plate.

General Watch Company Helvetia General Watch Co.

The image of the Rebberg Watch Co.

1904" the stamp is poor in the P and it often looks like "U.

Dr Ranfft identifies this movement as an Alpina 819, Gruen 819 and Rolex 600.

The purpose is to reduce friction on the moving parts of a watch.

Replacing watch movements requires careful handling of the movement and lots of practice.

The two notches on the yoke which moves the sliding pinion serve as the detents which hold the mechanism in either its usual winding position, or in the hand setting position when the crown and stem are pulled out.