Service Longines Conquest calibre: 291

The enamel medallion has at one point been touched up with nail varnish.

Lovely Longines calibre 291.

Not too bad, but slightly low amplitude.

I remove the oscillating weight.

I take apart the autowinder mechanism.

I have removed the hands and dial, rather complex date mechanism.

Here you can see the winding/setting mechanism.

The 291 has a very unusual gear train layout with a separate cock for the escape wheel.

Movement almost completely taken apart.

Movement is cleaned and ready to be put back together.

I fit a new mainspring.

I see that the balance moves freely after fitting the shock jewels.

Here I have fitted the setting/winding mechanism.

Gear train going back in place.

Gear train back together.

We have a ticking movement again as the balance goes back in place.

Thats more like it.

I fit the autowinder mechanism back in place.

Then the date mechanism goes back.

Dial and hands go back onto the movement.

The movement goes back into the case.

I remove as much of the old and damaged enamel as I can.

I start by filling in the damaged lettering.

I then mix up the green.

Case backs after 24-hour curing.

Great looking watch!