This is a very nice original parts book for the JI Case Model SE Power Unit engines.  It is fresh from an old Case dealership where it lived high and dry for decades.  It is in excellent condition with very minor handling wear and discoloration.  It has some minor mouse chewing in the upper left corner which affects nothing.  It measures about 8 1/2 x 11 inches with 74 pages. It is heavily illustrated with all of the parts including part numbers and would be a great addition to your early agricultural library especially if you have a Case SE power unit.  The pictures tell the story.  I can be reached at 262 573 193 1 if you'd like to talk about it.  Good Luck.