Pretty cool looking case, with 4 screws that hold the case back in place.

That’s pretty different from anything else!

I start taking apart the chronograph layer while the movement is still in the case.

I’m almost down to the base movement.

I have removed the dial and you can see the winding/setting mechanism.

Plenty of old dirt and solidified grease lying around.

Here you can see the gear train layout.

Old mainspring in the barrel.

I now prepare the case to be sent away to Replateit in Canada. Here I have removed the pusher buttons.

It’s a pretty nifty construction where all three tubes have threads that hold a washer in place, the washers then secure the gaskets into the tube.

Movement has been cleaned and is ready to be put back together.

I fit a new mainspring into the barrel.

I put the winding/setting mechanism back together.

Base movement coming together.

I fit the balance and the movement starts ticking.

That’s not bad at all!

The case arrives from Canada looking great! I fit new gaskets in the pendant and pusher tubes.

I fit the dial onto the movement and then fit the movement into the case. I find it easier to put the chronograph layer back together like this.

Chronograph parts coming together with the movement in the case.

The Pierce 134 has a clutch for the central second recorder. The original material has as usual turned to dust. But a bit of rubber and super glue makes a perfect clutch pad!

The chronograph almost back together.

After a lot of adjusting, it finally works like it should!

Funky movement for sure!

One last issue is that the tube of the second recorder hand is looser. I solder it in place.

I find a shade that matches the original shade of red.

Very cool looking watch!