Artists Script  Suggérée par jerseygirl 
Kunstlerschreibschrift Medium  Suggérée par donshottype 
Ambassador Script  Suggérée par donshottype 
Exmouth  Suggérée par claudeserieux 

The logo for this "for the movie stars" jewellery company is custom calligraphy based on formal English scripts.
Compare _Chopard_ with Kunstlerschreibschrift medium, which has a similar design -- in a more sloped, higher contrast presentation in which the X height of the lower case is much lower than the capital height. In this image the X height is made the same to facilitate the comparison

Don

Ambassador Script is a similar script in which the inclination angle is steeper than used for the letters in the Chopard logo. Like Kunstlerschreibschrift, it is a higher contrast presentation in which the X height of the lower case is much lower than the capital height.
Don

also similar

Edited:
Artists Script, already suggested by Jersey Girl, has about the same letterforms as Kunstlerschreibschrift medium, and seems to have been derived from the same pre-digital source. Inclination of letters I checked is slightly steeper and thus is closer to _Chopard_.
Artists Script is a Solofont included in 24 Script and Cursive Display Fonts (Dover Electronic Display Fonts) (CD-ROM and Book) Paperback – September 16, 1998
Book with CD is available for purchase from various sources per Amazon link suggested below.
http://www.amazon.com/Script-Cursive-Display-Electronic-CD-ROM/dp/0486999610
Don

Dan X. Solo loved to do photo manipulation of his fonts. This may explain the slightly more vertical inclination of his version of this script.
Don

Artists Script -> Art Script

Art Script = Excelsior Script

Marina Script an original design by Stephenson Blake 1936
Partial character set excerpted from SB specimen book



Don

Marina Script est plus proche de Palace Script.

Remarque: Excelsior Script est fait par Typefoundry Amsterdam

We are slowly finding a passable approximation.
@claudeserieux
Your image of Art Script is predigital. Do you know who published the specimen?
Thanks.
Don

Mecanorma

Excelsior


http://www.ebay.com/itm/Type-Specimen-of-Excelsior-Script-with-Semi-Bold-/230463824108

I hadn't checked on this post in a while, I had no idea this request would spur on such a conversation. Thank you all so much for your insight, it helps so much!.