Help to identifying a type of (British) sword

[Belgian1]

Hello and thank you Jim for these very interesting information. It is true that it would be nice if I finally bought the Robson.
But to return to this sword I also thought (but with much doubt) that it could be an officer of the Raj .... what you seem to confirm.
I hope to have soon the chance to see another sword like this one pass in front of me because this time I will have no hesitation .... ;-)

Have a nice day