Need to help on vintage watch

It looks very similar to this watch (link below), except the face on mine is much thinner...one of the slimmest watches I have ever seen.

It came in its orginal box, but few documents.

It also came with a medallion that says Movement # 526581 (have no idea what this is).

The only other document that I have appears to be an orginal certificate of authenticity. One section reads exactly as follows:

"Nous certifions la montre N" 348752 boite en or 18kt jaune, modele 96115 cadran relief or

Mouvement N '526581 17 rubis, a "ete' construite dans nos ateliers et a subi les epreuves de reglage thermique et dans les differentes positions....."

Any help on its possible value or where to go to get it appraised would be appreciated.

note from moderator: I deleted link to ebay auction, as such links are against our policy