It doesn't say Royal as it is a "Modele de Luxe" which is
a higher grade again.

You can just make it out on the Toplever.

Generally quality is not up there from 50's made guns
and you really need to "feel" it in the hands to get an
idea of what we call "build quality". 60 and 70's Purdey's
suffered from the same thing.

500 Nitro