I have a lense that I have no use for and would like to see it put to good use. On the lense cover it says, "Ilex Optical Co. Rochester, N.Y." Following are the specifications for this lense: Ilex Paragon Anastigmat F 4-5 Focus 14 3/4 inches Pat Applied for no. 26024.

I would like to know what this lense was for and if there is still a need for it and what it's approximate value is. Thank you for your help.