Heres a link to whats described as a DC4 Case http://www.leblancauction.com/DAUNHEIME/dc4%20tractor.htm But I've always referred to this style tractor as the DC3. My Uncle had one back in the 50s. He eventually bought the necessary parts to convert the front end to wide axle which was more practical for our type of farming. Ralph in Sask. http://lgoff.sasktelwebsite.net/