Originally Posted by
Mizkaki
Nancy,
The 31-15 and the 31-20 are the same machine except for the bobbin size and related area.
I'll look for a treadle plate, but I don't think I have one.
Cathy
Ok Cathy, now you've got me worried! My 31-15 looks much older than my 31-20, and the serial number is completely worn off so I don't know its year, but I'm guessing 1910's to 1920's? My 31-20 is from 1925, but in much better shape than the 31-15. Now tell me about the bobbins? What is the difference? As you can tell, I haven't played with either yet!
Nancy