Early bezel wound IWC?

To whom it may concern,
we recently acquired an early bezel wound pin set wrist watch. (Wound via rotating the bezel anti-clockwise).
Our watchmaker has serviced the watch and suggests that movement could likely be an IWC calibre, however no calibre number is visible on the movement.
Would this be something that would be able to be confirmed? I am only after confirmation that it is an IWC movement and not after any valuation etc.
I have tried to attach images of the case and movement but had no success. How can I send images?

Regards,
Damien

here u go ...

Picture Uploading - A Snappy Guide
To upload a pic to the forum, you will need to first upload the picture onto a hosting site. This can be space provided by your internet service provider (your account may already come with one with a limited size). Whatever the case, the pic has to reside on a permanently live server and cannot be on your harddrive.

Quick Step One: most people sign up for a free host at www.photobucket.com
Quick Step Two: Upload your pic, preferably in 640x480 size
Quick Step Three: Look for this box below and click on the URL beside IMG Code, and paste it directly in ‘Your Comment’ box when writing a new comment in the forum.

Quick Step Four: check, check, check that you have successfully uploaded the pic (like I have done with the image directly above :) by using the preview button i.e. clicking on the ‘tick’, just above the ‘Your Comment’ box. And you’re done !