Werther: Act I. Clair de lune

Have not identified the orchestra
Had hoped to associate the cellist Hubert Baron and/or Jacques Metehen with a likely Grand Orchestre symphonique candidate (Reader's Digest have likely changed Orchestre's e to an a)
Grand Orchestre symphonique seems most likely (but where is it? Paris? Paris opera?)
Grand Orchestre symphonique de RTL started with the name (at the moment this would be my choice).
Orchestre symphonique de Montréal speak French but don't appear particularly Grand, however the piece being performed requires a grander than normal sized orchestra so any otherwise suitable orchestra may have been enlarged for the performance.