A very special watch has come my way - and I feel I must share it, because there is not much documentation out there on the internet.

I will give a few teaser shots and you can try to guess specifics about it.

We will start off slow...

 

I'm guessing white gold AP pocket watch

 

AP Flying Saucer?

 

A sPeedmaster?

 

One clarification: It is yellow gold. Poor color distinction in this photo, I admit.

 

ok I give up

 

Ok,

Next...

Year?

Now for the harder part.

 

1928

 

I'm going to guess 1930's, maybe 1933 to throw a wild guess out there?

 

One last chance.... what caliber is in this Piguet?

 

I can't see it sideways. It's too thin

 

This? https://www.hodinkee.com/articles/ultra-thin-what-it-is-why-it-matters-and-who-does-it-best-part-i

Edit: Near bottom of page

 

Looks like a A.P 2003/1? Looks like the same movement as V.C 1003

 

marcnrth is correct.

It is a Jaeger Lecoultre caliber 145 movement. Supposedly 1.38mm high. 1.38mm... the thinnest commercially made movement ever made. And first made in 1907!

A few things of note: 1. The center wheel is not visible on the back plate. 2. The going train apparently has a few extra wheels for some purpose. 3. The levers and regulator are all recessed for the sake of thinness.

The thinness of this movement hasn't been beaten for over 100 years. Watches with its movement were sold until the 1960's.

First example I've ever seen of a Piguet with the movement.

(last picture is of the watch compared to my camera lens cap)

.

 

Very nice, so what's the year of production for this particular example?

 

Serial number puts it around mid 1950's.

 

Remarkable! Thanks for the background, and big congrats!

 

I love threads like this.