Bickham Script  Suggérée par malvolio 

It's very hard to tell, since the corners are blurry and the poster is tilted. My best would be either Champion Script, or Bickham Script.

Mal is right with Bickham. Note: the 'S' and 'E' are alternates
http://myfonts.us/td-B0OeRT

Good searching, pilaster - I wasn't sure if they were alternates or manually swashed.

Top tip Mal:
If you click on the 'Ff' icon in the Myfonts sample text header, you can turn on some of the OT features for the preview. In this case 'Stylistic Alternates'. It don't work for every sample, as you can end up with every letter being an alternate, but it works for this example.