Hey Everyone, I Was hoping someone could give me some guidance on the difference between the Pfaff 1245-706/47 and the Pfaff 1245-706/48. I am thinking about buying one from a friend but haven't been able to figure out if there any real differences or advantages /disadvantages from one machine to the next. A little back story, this fella bought one of each model of these machines from his brothers upholstery school when it shut down. They are both German made and he believes them to have been produced in 1979 and 1980, not completely sure. I have some pictures I can post if that would help. This would be my first machine purchase and want to make sure I don't buy a lemon or pass up on the better model. Thank you all for any and all guidance!