Does anyone have any information about this excellent cognac?

Picture of the label:
http://www.edle-draaper.no/Cognac/Re...EmpereurXO.jpg

Picture of the seal on the bottle neck:
http://www.edle-draaper.no/Cognac/Re...reurXOneck.jpg

It was bought in a little shop in an alley somewhere in Paris. Any
information would be appreciated. Where it can be bought. Approx
price. Website to the producer. Anything.

I'm going to Cognac in September, so I will have a look around there.
But it would be great to know a bit more before then.

TIA.
Terje Josang