Source : Webster's Revised Unabridged Dictionary (1913)

Contesseration \Con*tes`ser*a"tion\, n. [L. contesseratio, from
   contesserare to contract friendship by means of the tesserae
   (friendship tokens).]
   An assemblage; a collection; harmonious union. [Obs.]

         That person of his [George Herbert], which afforded so
         unusual a contesseration of elegancies.  --Oley.