Mystery Braces/Suspenders in Casino Royale (not the dinner jacket ones)

Jellyfish

Hi everyone, I recently bought the book Being Bond: A Daniel Craig Retrospective, which has behind-the-scenes photos of Craig's Bond films. There's a picture from Casino Royale of him on the Montenegro train where he first meets Vesper. In the film, he keeps his suit jacket on, but this picture shows him without the jacket and wearing braces. I've never seen these before and it was a surprise to me to still be seeing new things after all this time. Does anyone know anything about the braces? They appear to be navy blue with black ends and silver fastenings. Albert Thurston perhaps?

Asp9mm

They are Albert Thurstons in dark navy. Black ends if I remember.