Conclusion
In witness whereof, we the underwritten their Ambassadors Extraordinary, and Ministers Plenipotentiary, have signed with our hand, in their name, and in virtue of our full powers, have signed the present definitive treaty, and have caused the seal of our arms to be put thereto. Done at Paris the tenth day of February, 1763.
Bedford, C.P.S. Choiseul, Duc de Praslin. El Marq. de Grimaldi.
(L.S.) (L.S.) (LS )
"Ambassadors Extraordinary" = Personal Representative(s) of the Sovereign(s)
"Ministers Plenipotentiary" = Diplomatic Agent Ranking below the Ambassador(s)
The information about this treaty is taken from this website here: https://www.landofthebrave.info/1763-treaty-of-paris-text.htm