Singer 15-91 through 15-96
Can anyone tell me the difference between each of the 15 machines. There seems to be 15-91, 15-90, 15-88.
15-89, 15 -96 and 15-98? It is so confusing. I am getting a Singer treadle tonight. My daughter is bringing it with her from Woodbury. I don't have the serial number yet, and there will be no manual with it. I have been looking up everything I can find on the internet. I am sure it is a series 15, the tension knob is to the left in the very front of the machine, kind of like a headlight. Beyond that I am confused.
Marilyn