Could you help me to identify my watch ?

Dear All,
That "gousset" watch was to my grandma's father.
He has bought it between 1860 and 1890 i think.

I would like to know if it's genuine or fake watch.
- I would like to open the other side but i'm afraid to destruct my watch to see it inside.
- The mark to the watch's back is the first owner's mark or anything else ?
there are some scratched in numbers. what does it mean ?

I would like to know many things about it and my family at last !!!smiley

Best Regards
The scratched numbers in the case back are made each time the watch
01/06/2012 - 00:07
Was serviced. However you need to post photos of the movement
you need to post scans of the movement as well
01/06/2012 - 09:49
Inside the beast !!
01/06/2012 - 14:18
yep I've succeeded in opening my watch !! Now it's time to get down to work my friends smiley Thanks
An other one
01/06/2012 - 14:27