Need help identifying IWC pocket watch

Hello, I recently inherited a pocket watch from my grandfather. I don't think
he used it much, but it is pretty worn, probably by his father. I found a
forum post here, and based on the descriptions there, it looks somewhat like a
cal 66. to my eye, but I know
very little about clocks. So any help in identifying it will be appriciated.
There is some engraved numbers in it, only one that looked like a date, if so
the clock is from 1916. I, perhaps unwisely, tried to wind the clock, it
didn't work at first, but i started running after a little while.

As mentioned I don't know much about clocks like this, what is adviced when it
comes to servicing/restoration? And how do i even set the time? I guess i have
to do something with the gear on top?

Hi ATWINDSOR,

looks like a good quality gold cased IWC Lepine (open face) Pocketwatch. I can
find out more if you post a better image of the movement number. From the one
you posted, i can ony a see a six-digit number with two five in the middle.
The movement number is the key to more information.

To set the hands of the watch, push the little pin at the 11 o'clock position
with you fingernail and the turn the crown, this will engage the hands setting
mechanism.

br

Cromagnonman

Thanks, it was a bit difficult to take a picture of, but the number in the
movement was 525,508 (there is also a 5 digit number and a cross below it)

On the case it says 648,418.

According to this page I saw another place in the forums (http://moeb.on-
rev.com/dyIWC/dyIWC.irev)

The movement is a L Èp. calibre 65, dating from the year 1912.
The case was most probably produced resp. delivered around 1916.

I had the watch shop have a look at it, they recommende a rehabilitation if I
was to use it regulrarly. (removing everything and cleasning an reoiling) The
estimated 500 dollars. So haven't quite decided what to do yet, that is quite
expensive.