d 7 17a

Hi I am new here.  We just purchased a new to us d 7 17A.  My father had the same machine when we were kids.  I am trying to find out what year and model this is. its a 4 cylinder hydralic.  The ser number is 17A 3704.   Milton cat said it was to old for them to have any information.  I am also looking for knew knobs for the control levers.  The machine runs excellent

thanks in advance.

Rich

Rich, you have repeated this post. I answered your questions in the first one.
Craig