collectional

from The Collaborative International Dictionary of English v.0.48

Collectional \Col*lec"tion*al\ (-al), a.
   Of or pertaining to collecting.
   [1913 Webster]

         The first twenty-five [years] must have been wasted for
         collectional purposes.                   --H. A.
                                                  Merewether.
   [1913 Webster]